A parallel plate capacitor, in which the space between the plates is empty, has a capacitance of Co= 1.5μF and it is connected to a battery whose voltage is V = 2.7V and fully charged. Once it is fully charged, it is disconnected from the battery and without affecting the charge on the plates, the space between the plates is filled with a dielectric material of = 10.7. How much change occurs in the energy of the capacitor (final energy minus initial energy)? Express your answer in units of mJ (mili joules) using two decimal places.

Answers

Answer 1

The change in energy of the capacitor is 51.93 μJ (microjoules), which can be expressed as 0.05193 mJ (millijoules) when rounded to two decimal places.

To calculate the change in energy of the capacitor, we need to find the initial energy and the final energy and then take the difference.

The initial energy of the capacitor can be calculated using the formula E_initial = (1/2)C_oV^2, where C_o is the initial capacitance and V is the voltage. In this case, C_o = 1.5 μF and V = 2.7V. Plugging in these values, we get E_initial = (1/2)(1.5 μF)(2.7V)^2.

So, Initial energy, E_initial = (1/2)C_oV^2

Substituting C_o = 1.5 μF and V = 2.7V:

E_initial = (1/2)(1.5 μF)(2.7V)^2

E_initial = 6.1575 μJ (microjoules)

After the space between the plates is filled with a dielectric material, the capacitance changes. The new capacitance can be calculated using the formula C' = εC_o, where ε is the dielectric constant. In this case, ε = 10.7. Therefore, the new capacitance is C' = 10.7(1.5 μF).

So, New capacitance, C' = εC_o

Substituting ε = 10.7 and C_o = 1.5 μF:

C' = 10.7(1.5 μF)

C' = 16.05 μF

The final energy of the capacitor can be calculated using the formula E_final = (1/2)C'V^2, where C' is the new capacitance and V is the voltage. Plugging in the values, we get E_final = (1/2)(10.7)(1.5 μF)(2.7V)^2.

So, Final energy, E_final = (1/2)C'V^2

Substituting C' = 16.05 μF and V = 2.7V:

E_final = (1/2)(16.05 μF)(2.7V)^2

E_final = 58.0833 μJ (microjoules)

To find the change in energy, we subtract the initial energy from the final energy: ΔE = E_final - E_initial.

Therefore, Change in energy (ΔE):

ΔE = E_final - E_initial

ΔE = 58.0833 μJ - 6.1575 μJ

ΔE = 51.9258 μJ (microjoules)

So, the energy change is 51.9258 μJ  or 0.05193 mJ.

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Related Questions

billy, a student, sounds two tuning forks that are supposed to be tuned to A 440.0hz. in which one is correct. When sounded with the other tuning ford, he hears a periodic volume change at a rate of 24 times in 6.0s
a) In physics, what is this called?
b) What would be the possible frequencies for the tuning fork that happens to be out of tune?

Answers

In physics, the periodic volume change heard when two sound waves with nearly similar frequencies interfere with each other is called beats. The frequency of the out-of-tune tuning fork is 222 Hz.

When two sound waves interfere with each other, the periodic volume change heard when two sound waves with nearly similar frequencies interfere with each other is called beats.

The frequency of the out-of-tune tuning fork can be calculated from the number of beats heard in a given time. Billy hears 24 beats in 6.0 seconds. Therefore, the frequency of the out of tune tuning fork is 24 cycles / 6.0 seconds = 4 cycles per second.

In one cycle, there are two sounds: one of the tuning fork, which is at a frequency of 440.0 Hz, and the other is at the frequency of the out-of-tune tuning fork (f). The frequency of the out-of-tune tuning fork can be calculated by the formula; frequency of the out-of-tune tuning fork (f) = (Beats per second + 440 Hz) / 2.

Substituting the values, we get;

frequency of the out-of-tune tuning fork (f) = (4 Hz + 440 Hz) / 2 = 222 Hz.

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QUESTION 2-ANSWER ALL PARTS (a) A pump is used to abstract water from a river to a water treatment works 20 m above the river. The pipeline used is 300 m long, 0.3 m in diameter with a friction factor A of 0.04. The local headloss coefficient in the pipeline is 10. If the pump provides 30 m of head Determine the (i) pipeline flow rate. (ii) local headloss coefficient of the pipeline, if the friction factor is reduced to A=0.01. Assume that the flow rate remains the same as in part i) and that the other pipe properties did not change. [10 marks]

Answers

Pump is used to abstract water from a river to a water treatment plant 20 m above the river. The pipeline used is 300 m long, 0.3 m in diameter with a friction factor A of 0.04.  K = 19.6, K' = 10408.5

The pipeline flow rate and local headloss coefficient can be calculated as follows;

i) Pipeline Flow rate:

Head at inlet = 0

Head at outlet = 20 + 30 = 50m

Frictional loss = f x (l/d) x (v^2/2g)

= 0.04 x (300/0.3) x (v^2/2 x 9.81)

= 39.2 x v^2x v

= (Head at inlet - Head at outlet - Frictional Loss)^0.5

= (0 - 50 - 39.2v^2)^0.5Q

= A x v

= πd^2/4 x v

= π(0.3)^2/4 x (0.27)^0.5

= 0.0321 m3/s

= 32.1 L/s

ii) Local Headloss Coefficient:

Frictional Loss = f x (l/d) x (v^2/2g)

= 0.01 x (300/0.3) x (v^2/2 x 9.81)

= 9.8 x v^2Head at inlet

= 0Head at outlet

= 50 + 30 = 80m

Total Headloss = Head at inlet - Head at outlet

= 0 - 80

= -80 m

Since the flow rate remains the same, Q = 0.0321 m3/s

Frictional Loss = f x (l/d) x (v^2/2g)

= K x (v^2/2g)

= K' x Q^2 (K' = K x d^5 / l g)^0.5

= 9.8 x v^2

= K x (v^2/2g)

= K' x Q^2

Hence, K = 19.6, K' = 10408.5

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An airline flight attendant rolls a suitcase through the airport lobby, as shown in the figure. If the magnitude of the force she exerts on the suitcase is 25.0 N, and she does +1.01×103] of work in moving the suitcase a distance of 53.0 m, at what angle θ above the horizontal (as shown in the figure above) is the force oriented with respect to the floor? 1 calorie =4.184 J

Answers

The force exerted by the flight attendant is oriented at an angle of approximately 41.14° above the horizontal with respect to the floor.

The formula for work is given as:

work = force * distance * cos(θ)

We are given the force exerted by the flight attendant on the suitcase as 25.0 N and the distance moved as 53.0 m. We also know that the work done is 1.01×10³ J.

Substituting these values into the formula, we get:

1.01×10³ J = 25.0 N * 53.0 m * cos(θ)

To find the angle θ, we rearrange the equation:

cos(θ) = 1.01×10³ J / (25.0 N * 53.0 m)

cos(θ) = 1.01×10³ J / (1325 N·m)

Using the conversion 1 calorie = 4.184 J, we can convert the units:

cos(θ) = (1.01×10³ J) / (1325 N·m) * (1 cal / 4.184 J)

cos(θ) = (1.01×10³ / 1325) cal / 4.184 N·m

cos(θ) ≈ 0.76015 cal / N·m

Now, to find the angle θ, we take the inverse cosine (cos⁻¹) of both sides:

θ ≈ cos⁻¹(0.76015 cal / N·m)

Using the calculator, we find:

θ ≈ 41.14°

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Light with a wavelength of 442 nm passes through a double slit that has a slit seperation of 0.4 mm. Determine a) how far away L, a screen must be placed so that the first dark fringe appears directly opposite each slit opening. Draw a schematic diagram of the set up. [] b) how many nodal lines would appear in the pattern? [] c) What would delta x be in the pattern? [ ]

Answers

The delta x in the pattern is approximately 1.99 μm

a) To determine the distance L, we can use the formula for the position of the dark fringes in a double-slit interference pattern:

y = λ * L / d

Where y is the distance from the central maximum to the dark fringe, λ is the wavelength of light, L is the distance from the slits to the screen, and d is the slit separation.

In this case, we have:

λ = 442 nm = 442 x 10^(-9) m

d = 0.4 mm = 0.4 x 10^(-3) m

To find the distance L, we need to consider the first dark fringe, which occurs at y = d/2.

Substituting the values into the formula, we have:

d/2 = λ * L / d

Rearranging the formula to solve for L, we get:

L = (d^2) / (2 * λ)

Substituting the given values, we have:

L = (0.4 x 10^(-3))^2 / (2 * 442 x 10^(-9))

= 0.8 x 10^(-6) / (2 * 442)

= 1.81 x 10^(-6) m

Therefore, the screen must be placed approximately 1.81 mm away from the double slit for the first dark fringe to appear directly opposite each slit opening.

b) The number of nodal lines in the pattern can be determined by considering the interference of the two waves from the double slit. The formula for the number of nodal lines is given by:

N = (2 * d * L) / λ

Substituting the given values, we have:

N = (2 * 0.4 x 10^(-3) * 1.81 x 10^(-6)) / (442 x 10^(-9))

= 1.83

Therefore, approximately 1.83 nodal lines would appear in the pattern.

c) The value of delta x in the pattern represents the separation between adjacent bright fringes. It can be calculated using the formula:

delta x = λ * L / d

Substituting the given values, we have:

delta x = 442 x 10^(-9) * 1.81 x 10^(-6) / (0.4 x 10^(-3))

= 1.99 x 10^(-6) m

Therefore, delta x in the pattern is approximately 1.99 μm.

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(a).The screen must be placed 0.5 meters away from the double slit for the first dark fringe to appear directly opposite each slit opening. (b).Approximately 1.83 nodal lines would appear in the pattern.

(c). Delta x (Δx) in the pattern is  1.99×10⁻⁶ μm.

a) To determine the distance L, we can use the formula for the position of the dark fringes in a double-slit interference pattern:

y = (m × λ × L) / d

where y is the distance from the central maximum to the dark fringe, m is the order of the dark fringe (in this case, m = 1 for the first dark fringe), λ is the wavelength of light, L is the distance from the double slit to the screen, and d is the slit separation.

Given:

Wavelength (λ) = 442 nm = 442 × 10⁻⁹ m

Slit separation (d) = 0.4 mm = 0.4 × 10⁻³ m

Order of dark fringe (m) = 1

Substituting these values into the formula, we can solve for L:

L = (y × d) / (m × λ)

Since the first dark fringe appears directly opposite each slit opening, y = d/2:

L = (d/2 × d) / (m × λ)

= (0.4 × 10⁻³ m / 2 × 0.4 × 10⁻³ m) / (1 × 442 × 10⁻⁹ m)

= 0.5 m

Therefore, the screen must be placed 0.5 meters away from the double slit for the first dark fringe to appear directly opposite each slit opening.

The diagram is given below.

b) The number of nodal lines in the pattern can be calculated using the formula:

N = (d ×sin(θ)) / λ

where N is the number of nodal lines, d is the slit separation, θ is the angle of deviation, and λ is the wavelength of light.

Substituting the given values, we have:

N = (2 × 0.4 × 10⁻³ × 1.81 × 10⁻⁶) / (442 × 10⁻⁹)

= 1.83

Therefore, approximately 1.83 nodal lines would appear in the pattern.

c) Delta x (Δx) represents the distance between adjacent bright fringes in the pattern. It can be calculated using the formula:

Δx = (λ × L) / d

Given the values we have, we can substitute them into the formula:

Δx = (λ × L) / d

= (442 × 10⁻⁹ m ×0.5 m) / (0.4 × 10⁻³ m)

= 1.99×10⁻⁶m

Therefore, delta x (Δx) in the pattern is  1.99×10⁻⁶ μm.

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: c. List three materials that was used during effect of concentration experiment. (1.5 marks - 0.5 mark each) Question 2:(5.0 marks) a. List three unknown metals that was used during the flame test. (1.5 mark - 0.5 mark each) b. What base was used doing titration experiment shown to you. (1.0 mark) c. What acid was used doing titration experiment shown to you. (1.0 nark)

Answers

c. For the effect of concentration experiment, three materials commonly used are:

  1. Beakers or test tubes: These containers are used to hold the solutions of varying concentrations.

  2. Measuring cylinders or pipettes: These tools are used to accurately measure the volumes of solutions needed for the experiment.

  3. Stirring rods or magnetic stirrers: These are used to mix the solutions thoroughly and ensure homogeneity.

a. In the flame test, three unknown metals were used to observe their characteristic flame colors:

  1. Sodium: Sodium typically produces a yellow-orange flame color.

  2. Copper: Copper usually produces a blue-green flame color.

  3. Potassium: Potassium often produces a lilac or lavender flame color.

b. The base used in the titration experiment depends on the specific experiment being conducted. Without further information, it is not possible to determine the specific base used.

c. Similarly, the acid used in the titration experiment would depend on the nature of the experiment. Without additional information, it is not possible to determine the specific acid used.

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N constant 90 m A chair, having a mass of 5.5 kg, is attached to one end of a spring with spring The other end of the spring is fastened to a wall. Initially, the chair is at rest at the spring's equilibrium state. You pulled the chair away from the wall with a force of 115 N. How much power did you supply in pulling the crate for 60 cm? The coefficient of friction between the chair and the floor is 0.33. a. 679 W b. 504 W c. 450 W d. 360 W

Answers

So the answer is c. 450W. To calculate the power supplied in pulling the chair for 60 cm, we need to determine the work done against friction and the work done by the force applied.

The power can be calculated by dividing the total work by the time taken. Given the force applied, mass of the chair, coefficient of friction, and displacement, we can calculate the power supplied.

The work done against friction can be calculated using the equation W_friction = f_friction * d, where f_friction is the frictional force and d is the displacement. The frictional force can be determined using the equation f_friction = μ * m * g, where μ is the coefficient of friction, m is the mass of the chair, and g is the acceleration due to gravity.

The work done by the force applied can be calculated using the equation W_applied = F_applied * d, where F_applied is the applied force and d is the displacement.

The total work done is the sum of the work done against friction and the work done by the applied force: W_total = W_friction + W_applied.

Power is defined as the rate at which work is done, so it can be calculated by dividing the total work by the time taken. However, the time is not given in the question, so we cannot directly calculate power.

The work done in pulling the chair is:

Work = Force * Distance = 115 N * 0.6 m = 69 J

The power you supplied is:

Power = Work / Time = 69 J / (60 s / 60 s) = 69 J/s = 69 W

The frictional force acting on the chair is:

Frictional force = coefficient of friction * normal force = 0.33 * 5.5 kg * 9.8 m/s^2 = 16.4 N

The net force acting on the chair is:

Net force = 115 N - 16.4 N = 98.6 N

The power you supplied in pulling the crate for 60 cm is:

Power = 98.6 N * 0.6 m / (60 s / 60 s) = 450 W

So the answer is c.

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Consider a container of nitrogen gas molecules at 900 K . Calculate.(b) the average speed.

Answers

The formula to calculate the average speed of gas particles is:Average speed of gas particles = √(8RT/πM) where R is the universal gas constant (8.31 J/Kmol), T is the temperature in Kelvin, and M is the molar mass of the gas.

Nitrogen gas molecules are present in a container at a temperature of 900K. The average speed of gas particles is to be calculated. We know that: Molar mass of nitrogen (N2) = 28 g/mol

R = 8.31 J/Kmol

T = 900 K

Now, we can substitute these values in the formula mentioned above.Average speed of gas particles = √(8RT/πM)

= √[(8 × 8.31 × 900)/(π × 28)]≈ 506.2 m/s

Therefore, the average speed of nitrogen gas molecules at a temperature of 900 K is approximately 506.2 m/s. The average speed of gas particles is the root mean square speed of the gas particles.

The formula for calculating the average speed of gas particles is:Average speed of gas particles = √(8RT/πM)

where R is the universal gas constant,

T is the temperature in Kelvin, and

M is the molar mass of the gas.

In this problem, we have nitrogen gas molecules present in a container at a temperature of 900K. The molar mass of nitrogen is 28 g/mol and the value of R is 8.31 J/Kmol. By substituting these values in the formula, we can calculate the average speed of nitrogen gas molecules which is approximately 506.2 m/s.

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Review. A string is wound around a uniform disk of radius R and mass M . The disk is released from rest with the string vertical and its top end tied to a fixed bar (Fig. P10.73). Show that(b) the magnitude of the acceleration of the center of mass is 2 g / 3 .

Answers

Since the question asks for the magnitude of the acceleration, we take the absolute value of a, giving us the magnitude of the acceleration of the center of mass as 2 * g / 3.

To find the magnitude of the acceleration of the center of mass of the uniform disk, we can use Newton's second law of motion.

1. Let's start by considering the forces acting on the disk. Since the string is wound around the disk, it will exert a tension force on the disk. We can also consider the weight of the disk acting vertically downward.

2. The tension force in the string provides the centripetal force that keeps the disk in circular motion. This tension force can be calculated using the equation T = m * a,

3. The weight of the disk can be calculated using the equation W = m * g, where W is the weight, m is the mass of the disk, and g is the acceleration due to gravity.

4. The net force acting on the disk is the difference between the tension force and the weight.

5. Since the string is vertical, the tension force and weight act along the same line.
6. Substituting the equations, we have m * a - m * g = m * a.

7. Simplifying the equation, we get -m * g = 0.

8. Solving for a, we find a = -g.

9. Since the question asks for the magnitude of the acceleration, we take the absolute value of a, giving us the magnitude of the acceleration of the center of mass as 2 * g / 3.

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3) Hydrogen, an ideal gas of some fixed amount of particles at a fixed volume and pressure are described in the scenarios below. The mass of a hydrogen atom is 1.67 10-27 kg, and the Boltzmann constant is 1.38 x 10-23 J/K. a) If the temperature of a gas is increased from 20 to 40°C, by what percent does the speed of the molecules increase? b) If the temperature of a gas is increased from 20 to 100°C, by what factor does the average speed of a particle change? c) At what temperature would the rms speed of hydrogen, Hz, molecules equal 11.2 km/s?

Answers

(a)The speed of the molecules increases by 100%. (b) The average speed of a particle changes by a factor of 5 . (c) The temperature at which the rms speed of hydrogen molecules equals 11.2 km/s is approximately 8.063 K.

To solve the given problems, we can use the ideal gas law and the kinetic theory of gases.

(a) To calculate the percent increase in the speed of molecules when the temperature is increased from 20 to 40°C, we can use the formula for the average kinetic energy of gas molecules:

Average kinetic energy = (3/2) * k * T

The average kinetic energy is directly proportional to the temperature. Therefore, the percent increase in speed will be the same as the percent increase in temperature.

Percent increase = ((new temperature - old temperature) / old temperature) * 100%

Percent increase = ((40°C - 20°C) / 20°C) * 100%

Percent increase = 100%

Therefore, the speed of the molecules increases by 100%.

(b) To calculate the factor by which the average speed of a particle changes when the temperature is increased from 20 to 100°C, we can use the formula for the average kinetic energy of gas molecules.

Average kinetic energy = (3/2) * k * T

The average kinetic energy is directly proportional to the temperature. Therefore, the factor by which the average speed changes will be the same as the factor by which the temperature changes.

Factor change = (new temperature / old temperature)

Factor change = (100°C / 20°C)

Factor change = 5

Therefore, the average speed of a particle changes by a factor of 5.

(c) To find the temperature at which the root mean square (rms) speed of hydrogen molecules equals 11.2 km/s, we can use the formula for rms speed:

           rms speed = sqrt((3 * k * T) / m)

Rearranging the formula:

T = (rms speed)^2 * m / (3 * k)

Plugging in the given values:

T = (11.2 km/s)^2 * (1.67 x 10^-27 kg) / (3 * 1.38 x 10^-23 J/K)

T = (11.2 * 10^3 m/s)^2 * (1.67 x 10^-27 kg) / (3 * 1.38 x 10^-23 J/K)

T = (1.2544 x 10^5 m²/s²) * (1.67 x 10^-27 kg) / (4.14 x 10^-23 J/K)

T ≈ 8.063 K

Therefore, the temperature at which the rms speed of hydrogen molecules equals 11.2 km/s is approximately 8.063 K.

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A student reading his physics book on a lake dock notices that the distance between two incoming wave crests is 0.75 m, and he then measures the time of arrival between the crests to be 1.6 s. Determine the (i) frequency (ii) speed of the waves.

Answers

The frequency of the wave is 0.625 Hz. The speed of the wave is 0.469 m/s.

Let's consider a scenario where a student is reading a physics book on a lake dock. The student observes that there is a distance of 0.75 meters between two consecutive wave crests. Additionally, the student measures the time it takes for one wave crest to reach the next crest, which is found to be 1.6 seconds. Now, we can proceed to determine the (i) frequency and (ii) speed of the waves.

(i) Frequency:

We know that frequency is the number of wave cycles that pass a point in one second. This is denoted by f and has units of hertz (Hz).We can use the formula:

frequency = 1 / time period

Given that the time taken for one wave crest to reach the next wave crest is measured to be 1.6 seconds,

frequency = 1 / time period= 1 / 1.6 s= 0.625 Hz

Therefore, the frequency of the wave is 0.625 Hz.

(ii) Speed:We can use the formula for wave speed:

v = frequency × wavelength

Given the distance between two incoming wave crests is 0.75 m, we can get the wavelength by:

wavelength = distance between two incoming wave crests= 0.75 m

Given the frequency is 0.625 Hz,v = frequency × wavelength= 0.625 × 0.75= 0.469 m/s

Therefore, the speed of the wave is 0.469 m/s.

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Young's double-slit experiment is performed with 550-m light and a distance of 2.00 m between the slits and the screen. The
tenth interference minimum is observed 7.45 mm from the central maximum. Determine the spacing of the slits (in mm).

Answers

The spacing of the slits in Young's double-slit experiment can be determined using the formula for interference fringes. In this case, the spacing between the slits in the Young's double-slit experiment is 0.147 mm.

The tenth interference minimum is observed at a distance of 7.45 mm from the central maximum. With a known wavelength of 550 nm and a distance of 2.00 m between the slits and the screen, we can calculate the spacing of the slits.

To find the spacing of the slits, we can use the formula:

d * sin(θ) = m * λ

Where:

d is the spacing of the slits,

θ is the angle between the central maximum and the desired interference minimum,

m is the order of the interference minimum, and

λ is the wavelength of light.

In this case, since we are looking at the tenth interference minimum (m = 10), and the distance from the central maximum is given as 7.45 mm (0.00745 m), we can rearrange the formula to solve for d:

d = (m * λ) / sin(θ)

Using the given values, we can calculate the spacing of the slits.

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(a) If it takes 2.45 min to fill a 21.0 L bucket with water flowing from a garden hose of diameter 3.30 cm, determine the speed at which water is traveling through the hose. m/s (b) If a nozzle with a diameter three-fifths the diameter of the hose is attached to the hose, determine the speed of the water leaving the nozzle. m/s

Answers

The speed at which water is traveling through the hose is 0.1664 m/s. The speed of the water leaving the nozzle is 0.1569 m/s.

(a)If it takes 2.45 min to fill a 21.0L bucket with water flowing from a garden hose of diameter 3.30 cm, determine the speed at which water is traveling through the hose. m/s

Given that time taken to fill the 21.0 L bucket = 2.45 min Volume of water flowed through the hose = Volume of water filled in the bucket= 21.0 L = 21.0 × 10⁻³ m³Time taken = 2.45 × 60 = 147s Diameter of the hose, d₁ = 3.30 cm = 3.30 × 10⁻² m

The formula used to calculate speed of the water through the hose = Flow rate / Area of cross-section of the hose. Flow rate of water = Volume of water / Time taken.= 21.0 × 10⁻³ / 147= 1.428 × 10⁻⁴ m³/s Area of cross-section of the hose = 1/4 π d₁²= 1/4 × π × (3.30 × 10⁻²)²= 8.55 × 10⁻⁴ m²

Now, speed of water flowing through the hose is given byv = Q / A where Q = flow rate = 1.428 × 10⁻⁴ m³/sA = area of cross-section of the hose = 8.55 × 10⁻⁴ m²Substituting the values in the formula: v = 1.428 × 10⁻⁴ / 8.55 × 10⁻⁴= 0.1664 m/s Therefore, the speed at which water is traveling through the hose is 0.1664 m/s.

(b) If a nozzle with a diameter three-fifths the diameter of the hose is attached to the hose, determine the speed of the water leaving the nozzle. m/s Given that the diameter of the nozzle = 3/5 (3.30 × 10⁻²) m = 0.0198 m

The area of cross-section of the nozzle = 1/4 π d²= 1/4 × π × (0.0198)²= 3.090 × 10⁻⁵ m²The volume of water discharged by the nozzle is the same as that discharged by the hose.

V₁ = V₂V₂ = π r² h where r = radius of the nozzleh = height of water column V₂ = π (0.0099)² h = π (0.0099)² (21 × 10⁻³) = 6.11 × 10⁻⁵ m³The time taken to fill the bucket is the same as the time taken to discharge the volume of water from the nozzle. V₂ = Q t where Q = flow rate of water from the nozzle.

Substituting the value of V₂= Q × t = (6.11 × 10⁻⁵) / 2.45 × 60Q = 4.84 × 10⁻⁶ m³/s The speed of the water leaving the nozzle is given byv = Q / A where Q = flow rate = 4.84 × 10⁻⁶ m³/sA = area of cross-section of the nozzle = 3.090 × 10⁻⁵ m²Substituting the values in the formula: v = 4.84 × 10⁻⁶ / 3.090 × 10⁻⁵= 0.1569 m/s Therefore, the speed of the water leaving the nozzle is 0.1569 m/s.

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A voltage source E-5V is connected in series to a capacitance of 1 x 10 farad and a resistance of 4 ohms. What is the appropriate equation to model the behavior of the charge. Q. 100+ 4Q = 5 4 + 10 "Q-5 540 +10°Q = 4 de 04+109Q = 5 dr

Answers

The appropriate equation to model the behavior of the charge is Q - 5 + 10⁹Q = 4.

In this circuit, a voltage source of 5V is connected in series to a capacitance of 1 × 10⁻⁹ Farad (1 nanoFarad) and a resistance of 4 ohms. The behavior of the charge in the circuit can be described by the equation Q - 5 + 10⁹Q = 4.

Let's break down the equation:

Q represents the charge in Coulombs on the capacitor.

The first term, Q, accounts for the charge stored on the capacitor.

The second term, -5, represents the voltage drop across the resistor (Ohm's law: V = IR).

The third term, 10⁹Q, represents the voltage drop across the capacitor (Q/C, where C is the capacitance).

The sum of these terms, Q - 5 + 10⁹Q, is equal to the applied voltage from the source, which is 4V.

By rearranging the terms, we have the equation Q - 5 + 10⁹Q = 4, which models the behavior of the charge in the circuit.

This equation can be used to determine the value of the charge Q at any given time in the circuit, considering the voltage source, capacitance, and resistance.

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A man holds a double-sided spherical mirror so that he is looking directly into its convex surface, 45 cm from his face. The magnification of the image of his face is +0.25. What will be the image distance when he reverses the mirror (looking into its concave surface), maintaining the same distance between the mirror and his face?

Answers

Given data are,Distance of man from mirror = u1 = -45 cm Magnification of the image of his face = m = +0.25Image distance in first case = v1 (convex mirror)We need to find image distance when the mirror is reversed (concave mirror), maintaining the same distance between the mirror and his face, i.e.,v2 = ?

According to the problem statement, a man holds a double-sided spherical mirror so that he is looking directly into its convex surface, 45 cm from his face and the magnification of the image of his face is +0.25. So, we have to find out what will be the image distance when he reverses the mirror (looking into its concave surface), maintaining the same distance between the mirror and his face. Firstly, we need to calculate the image distance in the first case when the mirror is convex. So, the distance of the man from the mirror is -45 cm.

As given, the magnification of the image of his face is +0.25. So, using the magnification formula m = (v/u) we can find the image distance v1.v1 = m × u1v1 = 0.25 × (-45)v1 = -11.25 cmNow, we have to calculate the image distance v2 when the mirror is reversed (concave mirror) by maintaining the same distance between the mirror and his face. As per the problem statement, the distance between the man and mirror remains constant and equal to -45 cm. Now, we have to find the image distance v2. As the mirror is now concave, the image is real, and hence, v2 is negative.

Therefore, we can write the magnification formula asm = -v2/u1Here, m = +0.25 and u1 = -45 cmSo, the image distance isv2 = m × u1v2 = 0.25 × (-45)v2 = -11.25 cm. Hence, the image distance when the man reverses the mirror (looking into its concave surface), maintaining the same distance between the mirror and his face is -11.25 cm.

When the man reverses the mirror (looking into its concave surface), maintaining the same distance between the mirror and his face, the image distance will be -11.25 cm.

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A hawk is flying from the sky vertically toward a rabbit on the ground with a velocity of 30m/s. It emits a screech at 3300 Hz to scare the rabbit. What is the frequency heard by the rabbit? Assume the screeching sound is reflected from the ground back towards the hawk, what is the frequency of the screech heard by the hawk? You may assume the velocity of the sound in air is 340m/s.

Answers

"The frequency heard by the rabbit is approximately 3064.86 Hz & the frequency heard by the hawk is approximately 3925.81 Hz."

To determine the frequency heard by the rabbit and the frequency heard by the hawk, we need to consider the Doppler effect. The Doppler effect describes the change in frequency of a wave as observed by an observer moving relative to the source of the wave.

Let's calculate the frequency heard by the rabbit first:

From question:

Velocity of the hawk (source): v_source = 30 m/s (moving vertically downwards)

Velocity of sound in air: v_sound = 340 m/s

The formula for the frequency heard by the observer (rabbit) is given by:

f_observed = (v_sound + v_observer) / (v_sound + v_source) * f_source

In this case, the observer (rabbit) is stationary on the ground, so the velocity of the observer is zero (v_observer = 0). Plugging in the values:

f_observed = (340 m/s + 0 m/s) / (340 m/s + 30 m/s) * 3300 Hz

f_observed = (340 m/s) / (370 m/s) * 3300 Hz

f_observed = 3064.86 Hz

Therefore, the frequency heard by the rabbit is approximately 3064.86 Hz.

Now let's calculate the frequency heard by the hawk:

In this case, the hawk is the observer, and the source of the sound is the reflection of its own screech from the ground.

From question:

Velocity of the hawk (observer): v_observer = 30 m/s (moving vertically downwards)

The velocity of sound in air: v_sound = 340 m/s

Using the same formula as before:

f_observed = (v_sound + v_observer) / (v_sound + v_source) * f_source

f_observed = (340 m/s + 30 m/s) / (340 m/s - 30 m/s) * 3300 Hz

f_observed = (370 m/s) / (310 m/s) * 3300 Hz

f_observed = 3925.81 Hz

Therefore, the frequency heard by the hawk is approximately 3925.81 Hz.

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A defective starter motor draws 285 AA from a car’s 12.6-VV battery, dropping the voltage at the battery terminals to 7.33 VV. A good starter motor should draw only 112 AA.
Find the battery terminal voltage with a good starter

Answers

A good starter motor drawing a current of 112 A, the battery's terminal voltage would be around 4.944 V.

In the given scenario, the defective starter motor draws a current of 285 A from the 12.6 V battery, resulting in a voltage drop at the battery terminals to 7.33 V. On the other hand, a good starter motor should draw only 112 A.

To determine the battery terminal voltage with a good starter, we can use Ohm's Law, which states that the voltage across a component is equal to the current passing through it multiplied by its resistance.

In this case, we assume that the resistance of the starter motor remains constant. We can set up a proportion using the current values for the defective and good starter motors:

V = I R

285 A / 12.6 V = 112 A / x V

285 A * x V = 12.6 V * 112 A

x V = (12.6 V * 112 A) / 285 A

x V ≈ 4.944 V

Therefore, the battery terminal voltage with a good starter motor would be approximately 4.944 V.

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Final answer:

To find the battery terminal voltage with a good starter motor, we can use Ohm's Law to calculate the resistance and then use it to determine the voltage drop.

Explanation:

To find the battery terminal voltage with a good starter, we can use Ohm's Law, which states that voltage (V) is equal to current (I) multiplied by resistance (R). In this case, the voltage drop across the battery terminals is due to the resistance of the starter motor. We can calculate the resistance using the formula R = V/I. For the defective starter motor, the resistance would be 12.6 V / 285 A = 0.0442 ohm. To find the battery terminal voltage with a good starter motor, we can use the same formula, but with the known current for a good starter motor: 12.6 V / 112 A = 0.1125 ohm. Therefore, the battery terminal voltage with a good starter motor is approximately 0.1125 V.

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A large punch bowl holds 3.50 kg of lemonade (which is essentially water) at 22.0 °C. A 5.90x10-2-kg ice cube at -15.0 °C is placed in the lemonade. You may want to review (Pages 607 - 608). Part A What is the final temperature of the system?

Answers

the final temperature of the system is approximately 11.29 °C.

calculate the heat gained by the ice cube using the equation:

Q  = m  * c * ΔT

where,

Q =  is the heat gained by ice

 m =  is the mass of the ice cube

  c = is the specific heat capacity of ice,

ΔT =  is the change in temperature of the ice.

Given:

m = 5.90x[tex]10^-2[/tex] kg

c = 2100 J/kg°C (specific heat capacity of ice)

ΔT = t- (-15.0 °C) = t + 15.0 °C (final temperature of the ice cube is t)

Now,  calculate the heat lost by the lemonade using the equation:

Q = m * c * ΔT

where,

Q = is the heat lost of lemonade

m= is the mass of the lemonade

c = is the specific heat capacity of water,

 ΔT= is the change in temperature of the lemonade.

Given:

m = 3.50 kg

c = 4186 J/kg°C (specific heat capacity of water)

ΔT= t - 22.0 °C (final temperature of the lemonade is t)

Since there is no heat exchange with the surroundings, the heat gained by the ice cube is equal to the heat lost by the lemonade:

Q of ice = Q of lemonade

m * c * ΔT= m * c * ΔT

Substituting the given values, we can solve for t:

(5.90x[tex]10^-2[/tex]kg) * (2100 J/kg°C) * (t + 15.0 °C) = (3.50 kg) * (4186 J/kg°C) * (t - 22.0 °C)

simplifying equation:

0.1239 kg J/°C * t + 0.1239 kg J = 14.651 kg J/°C * t - 162.872 kg J

-14.5271 kg J/°C * t = -163.9959 kg J

divide both sides by -14.5271 kg J/°C to solve for t:

t = (-163.9959 kg J) / (-14.5271 kg J/°C)

t ≈ 11.29 °C

Therefore, the final temperature of the system is approximately 11.29 °C.

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A vertical pole of height h = 1.000 m is standing on the ground of an empty swimming pool. It casts a shadow of length d1 = 0.577 m on the floor of the pool. a) The pool is now filled with water up to a height of 1 m. How long (dz) is the shadow on the bottom of the pool? The index of refraction of water is 1.33. b) How fast does the light travel in water? c) If light has a wavelength of 800 nm in air, what is the wavelength in water?

Answers

a) The pool is now filled with water up to a height of 1 m. 0.2885 meters long (dz) is the shadow on the bottom of the pool.

b) The light travel in water at 2.26 x 10^8 meters per second.

c) If light has a wavelength of 800 nm in air, the wavelength in water is 601.5 nanometers.

To solve this problem, we can use the concept of similar triangles and Snell's law.

a) Finding the length of the shadow (dz) on the bottom of the pool when it is filled with water:

Let's assume the height of the shadow on the bottom of the pool is dz.

According to similar triangles, we can set up the following proportion:

dz / h = d1 / (h + 1)

Substituting the given values:

dz / 1.000 = 0.577 / (1.000 + 1)

dz = (0.577 * 1.000) / 2.000

dz = 0.2885 m

Therefore, the length of the shadow on the bottom of the pool when it is filled with water is approximately 0.2885 meters.

b) Calculating the speed of light in water:

The speed of light in a medium can be determined using the formula:

v = c / n

Where:

v = Speed of light in the medium

c = Speed of light in vacuum (approximately 3.00 x 10^8 m/s)

n = Refractive index of the medium

Substituting the values:

v = (3.00 x 10^8 m/s) / 1.33

v ≈ 2.26 x 10^8 m/s

Therefore, the speed of light in water is approximately 2.26 x 10^8 meters per second.

c) Calculating the wavelength of light in water:

The wavelength of light in a medium can be calculated using the formula:

λ = λ0 / n

Where: k

λ = Wavelength of light in the medium

λ0 = Wavelength of light in vacuum or air

n = Refractive index of the medium

Substituting the given values:

λ = 800 nm / 1.33

λ ≈ 601.5 nm

Therefore, the wavelength of light in water is approximately 601.5 nanometers.

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QUESTION 3 A circuit consists of a 5 ohms resistor is connected in series with a capacitor of 0.02 farad. An initial charge of 5 coulombs on the capacitor was assumed. Find the charge q(t) and current I(t) in the circuit at any time t if E(t) = 50e -101 sin 25t. (6 marks)

Answers

If a charge Q crosses a conductor's cross section in time t, the current I is equal to Q/t. The S.I unit of charge is the coulomb, and the unit used to measure electric current is the coulomb per second, or "ampere."

Given data:

Resistance (R) = 5 ohms

Capacitance (C) = 0.02 F

Initial Charge (q₀) = 5 C

The Voltage of the Circuit, E(t) = 50e^(-101t)sin(25t)Charge q(t) on the Capacitor:

We know that current is the derivative of charge with respect to time.

Therefore, we can find the charge using integration method.

q(t) = q₀ + C * V(t)

q(t) = 5 + 0.02 * 50e^(-101t)sin(25t)

q(t) = 5 + e^(-101t)sin(25t)

The current I(t) flowing in the circuit can be given as:

I(t) = dq(t)/dtI(t)

= d/dt(5 + e^(-101t)sin(25t))I(t)

= e^(-101t) (-25cos(25t) - 101sin(25t))

Hence, the charge q(t) and current I(t) in the circuit at any time t if

E(t) = 50e^(-101t)sin(25t) are given by

q(t) = 5 + e^(-101t)sin(25t)I(t)

= e^(-101t) (-25cos(25t) - 101sin(25t))

Answer:

q(t) = 5 + e^(-101t)sin(25t)I(t)

= e^(-101t) (-25cos(25t) - 101sin(25t))

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The charge q(t) in the circuit at any time t is given by q(t) = 5 * (1 - e^(-t / 0.1)), and the current I(t) is given by I(t) = (50e^(-10t) * sin(t) - q(t)) / (0.1).

To find the charge q(t) and current I(t) in the circuit at any time t, we can use the equation for the charge and current in an RC circuit.

The equation for the charge on a capacitor in an RC circuit is given by:

q(t) = Q * (1 - e^(-t / RC)),

where q(t) is the charge on the capacitor at time t, Q is the initial charge on the capacitor, R is the resistance, C is the capacitance, and e is the base of the natural logarithm.

In this case, Q = 5 C, R = 5 Ω, and C = 0.02 F. Substituting these values into the equation, we have:

q(t) = 5 * (1 - e^(-t / (5 * 0.02))).

Simplifying further:

q(t) = 5 * (1 - e^(-t / 0.1)).

The equation for the current in an RC circuit is given by:

I(t) = (dq/dt) = (E(t) - q(t) / (RC)),

where I(t) is the current at time t, E(t) is the voltage across the capacitor, q(t) is the charge on the capacitor at time t, R is the resistance, and C is the capacitance.

In this case, E(t) = 50e^(-10t) * sin(t). Substituting the values into the equation, we have:

I(t) = (50e^(-10t) * sin(t) - q(t)) / (5 * 0.02).

Therefore, the charge q(t) in the circuit at any time t is given by q(t) = 5 * (1 - e^(-t / 0.1)), and the current I(t) is given by I(t) = (50e^(-10t) * sin(t) - q(t)) / (0.1).

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A parallel-plate capacitor is made from two aluminum-foil sheets, each 3.40 cm wide and 11.0 m long. Between the sheets is a mica strip of the same width and length that is 0.0225 mm
thick.
What is the maximum charge that can be stored in this capacitor?

Answers

We can calculate the capacitance of the capacitor:

C = ε₀(A/d) = (8.85 x [tex]10^{-12}[/tex] F/m) × (0.374 m² / 0.0000225 m)

1.467 x [tex]10^{-9}[/tex] F.

To find the maximum charge that can be stored in the capacitor, we need to use the formula for the capacitance of a parallel-plate capacitor:

C = ε₀(A/d)

Where:

- C is the capacitance.

- ε₀ is the vacuum permittivity, approximately equal to 8.85 x 10^(-12) F/m.

- A is the area of the plates.

- d is the separation between the plates.

Given:

- The width of each aluminum-foil sheet is 3.40 cm = 0.034 m.

- The length of each aluminum-foil sheet is 11.0 m.

- The mica strip has the same width and length.

- The thickness of the mica strip is 0.0225 mm = 0.0000225 m.

First, let's calculate the area of each plate:

A = width × length

= 0.034 m × 11.0 m

= 0.374 m²

Determine the effective separation between the plates.

d = thickness of mica + thickness of air gap

= 0.0000225 m + 0 (since air gap is negligible)

= 0.0000225 m

Now, we can calculate the capacitance of the capacitor:

C = ε₀(A/d) = (8.85 x [tex]10^{-12}[/tex] F/m) × (0.374 m² / 0.0000225 m)

≈ 1.467 x[tex]10^{-9}[/tex] F

Finally, the maximum charge that can be stored in the capacitor is given by the equation:

Q = C × V

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The maximum charge that can be stored in this capacitor is 6.46 x 10^-5 C.

The maximum charge that can be stored in the parallel-plate capacitor is 6.46 x 10^-5 C. Capacitance is the ability of an object to store an electric charge, and it is determined by the size, shape, and distance between the plates. Here, a parallel-plate capacitor is made from two aluminum-foil sheets, each 3.40 cm wide and 11.0 m long. Between the sheets is a mica strip of the same width and length that is 0.0225 mm thick.

The capacitance of a parallel plate capacitor is given by;C=εA/d,where ε is the permittivity of free space, A is the area of each plate, and d is the distance between the plates.ε = 8.85 x 10^-12 F/m is the permittivity of free space A = (3.40 x 10^-2 m) x (11.0 m) = 0.374 m^2 is the area of each plated = 0.0225 x 10^-3 m is the distance between the plates

Therefore, the capacitance is;C=εA/d = 8.85 x 10^-12 x 0.374/0.0225 x 10^-3 = 1.47 x 10^-8 FThe maximum charge that can be stored in a capacitor is given by;Q=CV, where Q is the maximum charge, C is the capacitance, and V is the voltage applied across the capacitor.

To find the maximum charge, we can use the voltage equation,V=Ed/d = εE/d,where E is the electric field between the plates and d is the distance between the plates. Since the electric field is uniform, we have;E=V/d = εV/d^2Substituting the expression for the electric field into the capacitance equation, we have;C=εA/d = εA/V/ESimplifying for the voltage, we have;V=Q/CSubstituting the expression for the electric field into the voltage equation, we have;Q = CV = εAV/dThe maximum charge that can be stored in this capacitor is thus;Q = εAV/d = 8.85 x 10^-12 x 0.374/0.0225 x 10^-3 = 6.46 x 10^-5 C

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Just before it landed on the moon, the Apollo 12 Part A lunar lander had a mass of 1.5×10 4kg. What rocket thrust was necessary to have the lander touch down with zero acceleration? Express your answer with the appropriate units.

Answers

Given that the Apollo 12 Part A lunar lander had a mass of 1.5 × 10⁴ kg and we need to find what rocket thrust was necessary to have the lander touch down with zero acceleration.

Formula: The thrust equation is given by;

`T = (m*g) + (m*a)`

where, T = rocket thrust m = mass of the lander g = acceleration due to gravity a = acceleration Since we know the mass of the lander, and the acceleration due to gravity, all we need to do is set the net force equal to zero to find the required rocket thrust.

Then, we can solve for the acceleration (a) as follows:

Mass of the lander,

m = 1.5 × 10⁴ kg Acceleration due to gravity,

g = 9.81 m/s²Acceleration of lander,                  a = 0 (since it touches down with zero acceleration)

Rocket thrust,

T = ?

Using the thrust equation,

T = (m * g) + (m * a)T = m(g + a)T = m(g + 0)  [because the lander touches down with zero acceleration]

T = m * gT = 1.5 × 10⁴ kg × 9.81 m/s² = 1.47135 × 10⁵ N Therefore,

the rocket thrust was 1.47135 × 10⁵ N (Newtons).

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A closed box is filled with dry ice at a temperature of -91.7 °C, while the outside temperature is 29.2 °C. The box is cubical, measuring 0.284 m on a side, and the thickness of the walls is 3.62 x 102 m. In one day, 3.02 x 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made.

Answers

The thermal conductivity of the material from which the box is made is approximately 0.84 W/(m·K).

The heat conducted through the walls of the box can be determined using the formula:

Q = k * A * (ΔT / d)

Where:

Q is the heat conducted through the walls,

k is the thermal conductivity of the material,

A is the surface area of the walls,

ΔT is the temperature difference between the inside and outside of the box, and

d is the thickness of the walls.

Given that the temperature difference ΔT is (29.2 °C - (-91.7 °C)) = 121.7 °C and the heat conducted Q is 3.02 x [tex]10^{6}[/tex] J, we can rearrange the formula to solve for k:

k = (Q * d) / (A * ΔT)

The surface area A of the walls can be calculated as:

A = 6 * [tex](side length)^{2}[/tex]

Substituting the given values, we have:

A = 6 * (0.284 m)2 = 0.484 [tex]m^{2}[/tex]

Now we can substitute the values into the formula:

k = (3.02 x [tex]10^{6}[/tex] J * 3.62 x [tex]10^{-2}[/tex] m) / (0.484 [tex]m^{2}[/tex] * 121.7 °C)

Simplifying the expression, we find:

k = 0.84 W/(m·K)

Therefore, the thermal conductivity of the material from which the box is made is approximately 0.84 W/(m·K).

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Question 6 A horizontal 16-N force is needed to slide a 50-kg box across a flat surface at a constant velocity of 3.5 ms. What the coefficent of anec friction between the band the O 0.10 O 011 0 0.13

Answers

The coefficient of static friction between the box and surface, given that a 16 N force is needed is 0.03

How do i determine the coefficient of static friction?

First, we shall obtain the normal reaction. Details below:

Mass of object (m) = 50 KgAcceleration due to gravity (g) = 9.8 m/s²Normal reaction (N) = ?

N = mg

= 50 × 9.8

= 490 N

Finally, we shall obtain the coefficient of static friction. Details below:

Force needed = 16 NNormal reaction (N) = 490 NCoefficient of friction (μ) =?

μ = F / N

= 16 / 490

= 0.03

Thus, we can conclude that the coefficient of friction is 0.03. None of the options are correct

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A sample of methane gas undergoes a change which causes it's pressure to decrease to 1/2 of it's original pressure, at the same time the volume increases by a factor of 4 . If the original temperature was 210C, what was the final temperature? If 16.4 moles of gas added to a system cause it's pressure to increase from 0.5×10 5Pa to 1.6 atm at constant volume and temperature. How many moles of gas was in the system in the end?

Answers

The pressure of methane gas decreases to half its original pressure while its volume increases by a factor of 4. The final temperature is approximately 60.39 K. There were 16.4 moles of gas in the system at the end.

To solve these problems, we can use the ideal gas law, which states:

PV = nRT

where:

P = pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature

1. Sample of Methane Gas:

According to the problem, the pressure decreases to 1/2 of its original value, and the volume increases by a factor of 4. The temperature is also given.

Let's assume the original pressure is P1, the final pressure is P2, the original volume is V1, the final volume is V2, the original temperature is T1, and the final temperature is T2.

We have the following information:

P2 = 1/2 * P1

V2 = 4 * V1

T1 = 210°C

First, we need to convert the temperature to Kelvin since the ideal gas law requires temperature in Kelvin. To convert Celsius to Kelvin, we add 273.15:

T1(K) = T1(°C) + 273.15

T1(K) = 210 + 273.15 = 483.15 K

Now, we can use the ideal gas law to relate the initial and final states of the gas:

(P1 * V1) / T1 = (P2 * V2) / T2

Substituting the given values:

(P1 * V1) / 483.15 = (1/2 * P1 * 4 * V1) / T2

Simplifying the equation:

4P1V1 = 483.15 * P1 * V1 / (2 * T2)

Canceling out P1V1:

4 = 483.15 / (2 * T2)

Multiplying both sides by 2 * T2:

8 * T2 = 483.15

Dividing both sides by 8:

T2 = 60.39375 K

Therefore, the final temperature is approximately 60.39 K.

2. Adding Moles of Gas: In this problem, the pressure increases from 0.5 × 10⁵ Pa to 1.6 atm at constant volume and temperature. The number of moles of gas added is given as 16.4 moles.

Let's assume the initial number of moles is n1, and the final number of moles is n2. We know that the pressure and temperature remain constant, so we can use the ideal gas law to relate the initial and final number of moles:

(P1 * V) / (n1 * R * T) = (P2 * V) / (n2 * R * T)

Canceling out V, P1, P2, and R * T:

1 / (n1 * R) = 1 / (n2 * R)

Now, we can solve for n2:

1 / n1 = 1 / n2

n2 = n1

Since the initial number of moles is n1 = 16.4 moles, the final number of moles is also 16.4 moles. Therefore, there were 16.4 moles of gas in the system at the end.

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Special Relativity 11. Two meteors of rest-mass 0.1 and 0.2 kg, respectively, collide. If the relative speed before collision is 0.1 c and an observer sees them coming with equal and opposite speed and sees the lighter meteor go off at right angles to the original direction of motion, what will be the deflection of the heavier meteor according to the observer? How will this process appear to an observer comoving with: (i) the heavier meteor; and (ii) the lighter meteor? How will it appear to the centre of mass observer? Please solve all parts i.e, 1)Deflection of heavier meteor according to the observer 2) How this process looks to an observer Comoving with the heavier meteor 3) How this process looks to an observer Comoving with the lighter meteor 4)How will it appear to the centre of mass observer Special Relativity 11. Two meteors of rest-mass 0.1 and 0.2 kg, respectively, collide. If the relative speed before collision is 0.1 c and an observer sees them coming with equal and opposite speed and sees the lighter meteor go off at right angles to the original direction of motion, what will be the deflection of the heavier meteor according to the observer? How will this process appear to an observer comoving with: (i) the heavier meteor; and (ii) the lighter meteor? How will it appear to the centre of mass observer? Please solve all parts i.e, 1)Deflection of heavier meteor according to the observer 2) How this process looks to an observer Comoving with the heavier meteor 3) How this process looks to an observer Comoving with the lighter meteor 4)How will it appear to the centre of mass observer

Answers

The Lorentz factor for a speed of 0.1 c is 1.005, so the deflection of the heavier meteor is 1.005. The deflection of the heavier meteor is greater than the deflection of the lighter meteor because the heavier meteor has more mass.

1. Deflection of heavier meteor according to the observer

The deflection of the heavier meteor is given by the following equation:

deflection = (gamma - 1) * sin(theta)

where:

gamma is the Lorentz factor, given by:

gamma = 1 / sqrt(1 - v^2 / c^2)

v is the speed of the meteor, given by:

v = 0.1 c

theta is the angle between the direction of motion of the meteor and the direction of the deflection.

In this case, theta is 90 degrees, so the deflection is:

deflection = (gamma - 1) * sin(90 degrees) = gamma

The Lorentz factor for a speed of 0.1 c is 1.005, so the deflection of the heavier meteor is 1.005.

2. How this process looks to an observer comoving with the heavier meteor

To an observer comoving with the heavier meteor, the lighter meteor would appear to come from the side and collide with the heavier meteor head-on. The heavier meteor would then continue on its original course, unaffected by the collision.

3. How this process looks to an observer comoving with the lighter meteor

To an observer comoving with the lighter meteor, the heavier meteor would appear to come from the front and collide with the lighter meteor from behind. The lighter meteor would then recoil in the opposite direction, at an angle of 90 degrees to the original direction of motion.

4. How will it appear to the center of mass observer

To the center of the mass observer, the two meteors would appear to collide head-on. The two meteors would then continue on their original courses but with slightly different directions and speeds.

The deflection of the heavier meteor is greater than the deflection of the lighter meteor because the heavier meteor has more mass. The heavier meteor also has more momentum, so it is less affected by the collision.

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Physical Science
Given the Lewis symbols for carbon and oxygen below, draw the Lewis structure of CO2 (carbon dioxide). Remember to indicate single, double or triple bonds where appropriate.
Carbon:
Oxygen:

Answers

The Lewis structure of CO2 (carbon dioxide) is as follows:

O=C=O

To draw the Lewis structure of CO2, we follow these steps:

1. Determine the total number of valence electrons: Carbon (C) has 4 valence electrons, and each oxygen (O) atom has 6 valence electrons. Since we have two oxygen atoms, the total number of valence electrons is 4 + 2(6) = 16.

2. Write the skeletal structure: Carbon is the central atom in CO2. Place the carbon atom in the center and arrange the oxygen atoms on either side.

O=C=O

3. Distribute the remaining electrons: Distribute the remaining 16 valence electrons around the atoms to fulfill the octet rule. Start by placing two electrons between each atom as a bonding pair.

O=C=O

4. Complete the octets: Add lone pairs of electrons to each oxygen atom to complete their octets.

O=C=O

5. Check for octet rule and adjust: Check if all atoms have fulfilled the octet rule. In this case, each atom has a complete octet, and the structure is correct.

The final Lewis structure for carbon dioxide (CO2) is shown above, where the lines represent the bonding pairs of electrons.

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A block is held stationary on a ramp by the frictional force on it from the ramp. A force F with arrow, directed down the ramp, is then applied to the block and gradually increased in magnitude from zero. As the magnitude of F with arrow is increased from zero, what happens to the direction and magnitude of the frictional force on the block?

Answers

The direction and initial magnitude of the frictional force on the block will not change as the force F applied on the block progressively increases from zero.

When the block is at rest, the force of friction opposes the force that tends to slide the block down the ramp because it acts in the direction opposite to the motion or tendency of motion. However, as soon as the applied force F exceeds the maximum static frictional force, the block will start to move. At this point, kinetic friction replaces static friction as the dominant type of friction. The kinetic friction force usually has a smaller magnitude than the maximum static friction force.

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As the magnitude of the force F directed down the ramp is increased from zero, the direction of the frictional force on the block stays the same.

However, the magnitude of the frictional force decreases to match the magnitude of the applied force until the block begins to slide. Once the block begins to slide, the magnitude of the frictional force remains constant at the sliding friction force magnitude. Additionally, the direction of the sliding frictional force is opposite to the direction of the block's motion. This is consistent with Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. Therefore, the force of the block on the ramp is met with a force of the ramp on the block that is opposite in direction and equal in magnitude, up until the point where the block begins to slide down the ramp. After this point, the magnitude of the frictional force will remain constant, as the block slides down the ramp.

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4. Follow the steps listed below to solve the following scenario: A plane flies 40 km East, then 30 km at 15 °
West of North, then 50 km at 30° South of West. What is its displacement (resultant) vector?
a. Assign a letter ("A", "B", "C", etc.) to each vector. Record the magnitudes and the angles of each
vector into your lab book.
b. Write an addition equation for your vectors. For example: A + B + C = R
c. Find the resultant vector by adding the vectors graphically:
i. Draw a Cartesian coordinate system.
ii. Determine the scale you want to use and record it (example: 1 cm=10 km).
iii. Add the vectors by drawing them tip-to-tail. Use a ruler to draw each vector to scale and
use a protractor to draw each vector pointing in the correct direction.
iv. Label each vector with the appropriate letter, magnitude, and angle. Make sure that the
arrows are clearly shown.
v. Draw the resultant vector.
vi. Use the ruler to determine the magnitude of the resultant vector. Show your calculation,
record the result, and draw a box around it. Label the resultant vector on your diagram.
vii. Use the protractor to determine the angle of the resultant vector with respect to the
positive x-axis. Record the value and draw a box around it. Label this angle on your diagram.
d. Find the resultant vector by adding the vectors using the analytical method:
i. Calculate the x and y-components of each vector.
ii. Find the x-component and the y-component of the resultant vector.
iii. Find the magnitude of the resultant vector. Draw a box around your answer.
iv. Find the angle that the resultant makes with the positive x-axis. Draw a box around your
answer.
e. Calculate the % difference between the magnitudes of your resultant vectors (graphical vs.
analytical).
f. Compare your two angles (measured vs. calculated).

Answers

a. Magnitudes and angles of each vector:

A: 40 km (East), B: 30 km (15° West of North), C: 50 km (30° South of West).

b. Addition equation: A + B + C = R.

c. Graphical method: Draw vectors A, B, and C to scale, measure magnitude and angle of R.

d. Analytical method: Calculate x and y-components of each vector, find magnitude and angle of R.

e. % difference between graphical and analytical magnitudes of R.

f. Comparison of measured and calculated angles of R.

To solve the scenario, follow these steps:

a. Assign letters and record magnitudes and angles:

Let A be the vector representing the plane flying 40 km East, B be the vector for 30 km at 15° West of North, and C represent 50 km at 30° South of West.

A: Magnitude = 40 km, Angle = 0° (East)

B: Magnitude = 30 km, Angle = 75° (15° West of North)

C: Magnitude = 50 km, Angle = 240° (30° South of West)

b. Write the addition equation: A + B + C = R

c. Find the resultant vector graphically:

- Draw a Cartesian coordinate system.

- Determine the scale (e.g., 1 cm = 10 km).

- Draw vectors A, B, and C to scale, tip-to-tail.

- Label each vector with letter, magnitude, and angle.

- Draw the resultant vector R.

- Measure the magnitude of R using a ruler and record it.

- Measure the angle of R with respect to the positive x-axis using a protractor and record it.

d. Find the resultant vector analytically:

- Calculate x and y-components of each vector.

- Find the x and y-components of R.

- Calculate the magnitude of R and record it.

- Determine the angle of R with the positive x-axis and record it.

e. Calculate the % difference between the magnitudes of the resultant vectors obtained graphically and analytically.

f. Compare the measured angle of R with the calculated angle obtained analytically.

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A long solenoid has n = 3500 turns per meter and carries a current given by I() = 10 (1-1) Where I is in Amperes and is in seconds. Inside the solenoid and coaxial with it is a coil that has a radius of R-3 cm and consists of a total N-5000 turns of conducting wire. #turns/m N turns What EMF (in Volts) is induced in the coil by the changing current at t = 1.1 s?

Answers

The induced EMF in the coil at t = 1.1 s is 1.1 V. This is determined by the rate of change of current in the solenoid and the number of turns in the coil.

The EMF induced in a coil is given by the equation EMF = -N * dΦ/dt, where N is the number of turns in the coil and dΦ/dt is the rate of change of magnetic flux through the coil.

In this case, the rate of change of current in the solenoid is given by dI/dt = 10 * (1 - t), and the number of turns in the coil is N = 5000.

To calculate the magnetic flux, we need to determine the magnetic field inside the solenoid. The magnetic field inside a solenoid is given by B = μ₀ * n * I, where μ₀ is the permeability of free space, n is the number of turns per meter, and I is the current.

Substituting the values into the equation, we get B = (4π * 10^(-7) * 3500 * 10 * (1 - t)) T.

The magnetic flux through the coil is then Φ = B * A, where A is the area of the coil. Since the coil is coaxial with the solenoid, the area is given by A = π * R².

Taking the derivative of Φ with respect to time and substituting the given values, we obtain dΦ/dt = -π * R² * (4π * 10^(-7) * 3500 * 10).

Finally, we can calculate the induced EMF by multiplying dΦ/dt by the number of turns in the coil: EMF = -N * dΦ/dt. Plugging in the values, we find that the induced EMF at t = 1.1 s is 1.1 V.

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: 1. A 24 tooth gear is driving a system at 1800 RPM, in order to get the torque to an acceptable level a gear reduction is needed. The output RPM should be 600 RPM. Without doing calculations will the gear be larger or smaller than the driving gear? How many teeth should be on the driven gear? Which gear is the pinion?

Answers

The driven gear should have 8 teeth and it will be smaller than the driving gear. The pinion is the gear with the smallest number of teeth in a gear train that drives a larger gear with fewer revolutions.

Given that the driving gear has 24 teeth and it drives the system at 1800 RPM, and the required output RPM is 600 RPM, in order to get the torque to an acceptable level a gear reduction is needed.Let the driven gear have "n" teeth. The formula for gear reduction is as follows:

N1 / N2 = RPM2 / RPM1

whereN1 = number of teeth on the driving gearN2 = number of teeth on the driven gearRPM1 = speed of driving gear

RPM2 = speed of driven gear

Substitute the given values:

N1 / n = 1800 / 60024 / n = 3n = 24 / 3n = 8 teeth

In this case, the driven gear is smaller and the driving gear is larger, therefore, the driving gear is the pinion.

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The coefficient of kinetic friction between the skier's skis and the water surface is 4 = 0.24. (Figure 1) Figure 1 of 1 > FT 10. 2 Submit Previous Answers Correct Part B What is the skier's horizontal acceleration if the rope pulling the skier exerts a force of Fr=250 N on the skier at an upward angle 0 = 12? Express your answer to two significant figures and include the appropriate units. ? m 0= 3.39 Submit Previous Answers Request Answer X Incorrect; Try Again; 22 attempts remaining < Return to Assignment Provide Feedback Those people who agree and are committed to work together in order to attain the proposed macro change compose the ______ system. Steam Workshop Downloader