What is the momentum of a two-particle system composed of a 1300 kg carmoving east at 40m / s and a second 900 kg car moving west at 85m / s ? Let east be the positive direction. Answer in units of kg m / s

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Answer 1

The momentum of the two-particle system is -24500 kg m/s, opposite to the positive direction.

In a two-particle system, momentum is conserved. Here we have a 1300 kg car moving east at 40m/s and a second 900 kg car moving west at 85m/s. Let's find out the momentum of the system.

Mass of the 1st car, m1 = 1300 kg

Velocity of the 1st car, v1 = +40 m/s (east)

Mass of the 2nd car, m2 = 900 kg

Velocity of the 2nd car, v2 = -85 m/s (west)

Taking east as positive, the momentum of the 1st car is

p1 = m1v1 = 1300 × 40 = +52000 kg m/s

Taking east as positive, the momentum of the 2nd car is

p2 = m2v2 = 900 × (-85) = -76500 kg m/s

As the 2nd car is moving in the opposite direction, the momentum is negative.

The total momentum of the system,

p = p1 + p2 = 52000 - 76500= -24500 kg m/s

Therefore, the momentum of the two-particle system is -24500 kg m/s. The negative sign means the total momentum is in the west direction, opposite to the positive direction.

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Related Questions

Physics
The Gravity Force Fgrav between two objects with masses M1 and
M2 is 100 N. If the separation between them is tripled and the mass
of each object is doubled, what is Fgrav?

Answers

When the separation between two objects is tripled and the mass of each object is doubled, the gravitational force between them decreases to (4/9) of its original value. In this case, the force decreases from 100 N to approximately 44.44 N.

The gravitational force between two objects is given by the equation:

Fgrav = G * (M₁ * M₂) / r²,

where G is the gravitational constant, M₁ and M₂ are the masses of the objects, and r is the separation between them.

In this scenario, we have Fgrav = 100 N. If we triple the separation between the objects, the new separation becomes 3r. Additionally, if we double the mass of each object, the new masses become 2M₁ and 2M₂.

Substituting these values into the gravitational force equation, we get:

Fgrav' = G * ((2M₁) * (2M₂)) / (3r)²

      = (4 * G * (M₁ * M₂)) / (9 * r²)

      = (4/9) * Fgrav.

Therefore, the new gravitational force Fgrav' is (4/9) times the original force Fgrav. Substituting the given value Fgrav = 100 N, we find:

Fgrav' = (4/9) * 100 N

      = 44.44 N (rounded to two decimal places).

Hence, the new gravitational force is approximately 44.44 N.

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from the Which mentis true about the ba's motion at the moment when it has reached its maximum height? w Of Woyant Acceleration are both w A ball is thrown vertically upwards from the ground. Which statement is true about the ball's motion at the moment when it has reached its maximum height? OA Velocity is upwards, Acceleration is zero OB Velocity is zero, Acceleration is downwards OC. Velocity is zero, Acceleration is upwards OD. Velocity is downwards, Acceleration is zero OE Velocity and Acceleration are both zero

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At the moment when the ball reaches its maximum height, the correct statement about its motion is: OB. Velocity is zero, Acceleration is downwards.

When a ball is thrown vertically upwards, it undergoes a motion influenced by gravity. As the ball moves upward, its velocity decreases due to the opposing force of gravity. At the highest point of its trajectory, the ball momentarily stops moving upwards. This means that the velocity of the ball is zero at its maximum height.

However, even though the velocity is zero, the ball is still experiencing the force of gravity pulling it downward. This downward force causes the ball to undergo a downward acceleration. Thus, the acceleration of the ball at the moment it reaches its maximum height is directed downwards.

In summary, when the ball reaches its maximum height, the velocity is zero as it momentarily stops moving upwards. The acceleration, on the other hand, is directed downwards due to the force of gravity acting on the ball. Therefore, statement OB is true: Velocity is zero, Acceleration is downwards.

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a ball rolls of a table that 1.2 meter above the ground.
how much time does it take for the ball to hit the ground
how far from the table does the ball hit the ground

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The ball will hit the ground 1.2 m away from the table. Therefore, the ball will hit the ground in 0.49 s and 1.2 m away from the table.

Given that the height of the table above the ground is 1.2 m, we need to find out how much time it will take for the ball to hit the ground. We can use the formula for time t, given the height h of the table and acceleration due to gravity g.t = sqrt(2h/g)t = sqrt(2 × 1.2/9.8) = 0.49 s.

Therefore, the ball will hit the ground in 0.49 s.Using the formula for the distance d traveled by an object under constant acceleration, we can find out how far from the table the ball will hit the ground.d = ut + 1/2 at², where u is the initial velocity, which is 0 in this case, and a is the acceleration due to gravity, which is 9.8 m/s²d = 0 × 0.49 + 1/2 × 9.8 × 0.49²d = 1.2 mTherefore, the ball will hit the ground 1.2 m away from the table. Therefore, the ball will hit the ground in 0.49 s and 1.2 m away from the table.

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A diverging lens has a focal distance of -5cm. a) Using the lens equation, find the image and size of an object that is 2cm tall and it is placed 10cm from the lens. [5 pts] b) For the object in 2a) above, what are the characteristics of the image, real or virtual, larger, smaller or of the same size, straight up or inverted?

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A diverging lens has a focal distance of -5cm. The focal length of the lens = -5 cm .characteristics of the image will be: Virtual image . Therefore, the image is 3cm tall.

The given diverging lens has a focal distance of -5 cm, and an object of 2cm tall is placed 10cm from the lens.

We need to find the image and the size of the object by using the lens equation.

Lens equation is given as: 1/v - 1/u = 1/f Where ,f is the focal length of the lens, v is the image distance, u is the object distance

Here, the focal length of the lens = -5 cm

Object distance = u = -10 cm (Negative sign indicates the object is in front of the lens)Height of the object = h = 2 cm

Let's calculate the image distance(v) by substituting the values in the lens equation.1/v - 1/-10 = 1/-5Simplifying the equation, we get, v = -15 cm

Since the image distance(v) is negative, the image is virtual, and the characteristics of the image will be: Virtual image

Larger than the object (since the object is placed beyond the focal point)Erect image (since the object is placed between the lens and the focal point)

Therefore, the image is 3cm tall.

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One long wire lies along an x axis and carries a current of 60 A in the positive x direction. A second long wire is perpendicular to the xy plane, passes through the point (0, 6.6 m, 0), and carries a current of 69 A in the positive z direction. What is the magnitude of the resulting magnetic field at the point(0, 1.6 m, 0)? Number ___________ Units _______________

Answers

The magnitude of the resulting magnetic field at the point (0, 1.6 m, 0) is approximately 3.58 × 10⁻⁶ T (Tesla).

To calculate the magnetic field at the given point, we can use the Biot-Savart law. The Biot-Savart law states that the magnetic field created by a current-carrying wire is directly proportional to the current and inversely proportional to the distance from the wire.

Considering the first wire along the x-axis, the magnetic field it produces at the given point will have only the y-component. Using the Biot-Savart law, we find that the magnetic field magnitude is given by,

B1 = (μ₀I₁)/(2πr₁)

For the second wire perpendicular to the xy plane, the magnetic field it produces at the given point will have only the x-component. Using the Biot-Savart law again, we find that the magnetic field magnitude is given by,

B2 = (μ₀ * I₂) / (2π * r₂)

To find the resulting magnetic field, we use vector addition,

B = √(B₁² + B₂²)

Substituting the given values,

B = √(((4π × 10⁻⁷)60) / (2π1.6))² + ((4π × 10⁻⁷)69)/(2π * 6.6 m))²)

B ≈ 3.58 × 10⁻⁶ T

Therefore, the magnitude of the resulting magnetic field at the given point is approximately 3.58 × 10⁻⁶ T.

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Helppppppp :((((((
:((((((

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Answer:

b is the equivalent

do u want explanation

What is the angle of the 1st order dark fringe created when a light with a wavelength of 6.24x10⁻⁷m is sent through a set of slits that are 9.18x10⁻⁶m apart? A. 0.102° B. 3.90⁰ C. 5.85⁰ D. 0.0680⁰

Answers

The angle of the first-order dark fringe is approximately 3.90° (option B).

To find the angle of the first-order dark fringe, we can use the formula for the fringe spacing in a double-slit interference pattern:

sin(θ) = mλ/d

Where:

θ is the angle of the fringe,

m is the order of the fringe (in this case, m = 1 for the first-order fringe),

λ is the wavelength of the light, and

d is the slit spacing.

Plugging in the values:

m = 1

λ = 6.24x10⁻⁷ m

d = 9.18x10⁻⁶ m

sin(θ) = 1 × (6.24x10⁻⁷ m) / (9.18x10⁻⁶ m)

sin(θ) ≈ 0.068

To find the angle θ, we can take the inverse sine (sin⁻¹) of 0.068:

θ ≈ sin⁻¹(0.068)

θ ≈ 3.90°

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If your have 20 A breaker in your car garage that has a power supply of 120 V. You have plugged in electrical snow blower with 1800 W. What is the max power of an equipment that you can plug in at the same time without trippingg the breaker? W

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The maximum power of an additional equipment you can plug in without tripping the breaker is 2400 watts (W). To determine the maximum power of an additional equipment you can plug in without tripping the breaker, you need to consider the power limit of the breaker.

The power (P) is calculated using the formula:

P = Voltage (V) * Current (I)

Voltage (V) = 120 V

Breaker current limit (I) = 20 A

To find the maximum power, we can rearrange the formula as:

P = V * I

P = 120 V * 20 A

P = 2400 W

Therefore, the maximum power of an additional equipment you can plug in without tripping the breaker is 2400 watts (W).

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What is the terminal velocity of a ball if:
Earth (g=9.8 m/s2)
Glycerine (Viscous Liquid)
Jar Diameter: 7.0 cm
Ball Diamater: 7.0 mm
Distabce between point A and B =60 cm
Density of the Liquid= 1260 (o) kg/m3
Density of the Glass Ball= 2600 (p) Kg/m
Time: 19 mins 772 seconds

Answers

The terminal velocity of the ball is 0.000242 m/s. An item falling through a fluid at its greatest speed is said to have reached its terminal velocity. When the combined drag and buoyancy forces are equal to the force of gravity pulling the item downward, it is seen.

Earth (g=9.8 m/s2)Glycerine (Viscous Liquid) Jar Diameter: 7.0 cm, Ball Diameter: 7.0 mm Distabce between point A and B =60 cmDensity of the Liquid= 1260 (o) kg/m3 Density of the Glass Ball= 2600 (p) Kg/mTime: 19 mins 772 seconds. The formula to calculate the terminal velocity of an object is given byvt = [(2mg)/(ρACd)]^0.5

where,vt = Terminal Velocitym = mass of the objectρ = density of the fluidA = projected area of the objectCd = Drag coefficientg = acceleration due to gravity, When the object reaches its terminal velocity, the net force on the object becomes zero, and it moves with a constant speed. Here, the acceleration of the ball is zero when the ball reaches terminal velocity.

So, the net force acting on the ball is zero.Therefore, the forces acting on the ball are:Weight = mgBuoyant Force = ρgV SubmergedArchimedes' principle states that any object wholly or partially submerged in a fluid experiences an upward buoyant force equal in magnitude to the weight of the fluid displaced

by the object.m = (4/3)πr³p = (4/3)π(0.35×10⁻²)³×2600 = 0.005 kg

Volume of the submerged ball, Vsub = (4/3)πr³ = (4/3)π(0.35×10⁻²)³ = 1.179×10⁻⁵ m³Density of the glycerine, ρ = 1260 kg/m³Weight of the ball, W = mg = 0.005×9.8 = 0.049 NThe buoyant force acting on the ball is given byB = ρgVsubmerged = 1260×9.8×1.179×10⁻⁵ = 0.015 NThe net force on the ball is F = B - W = 0.015 - 0.049 = -0.034 NAs the ball is moving upwards, the direction of the net force is upwards, so it opposes the motion of the ball. Hence, the acceleration of the ball is negative, and the speed of the ball decreases.After a certain time, the speed of the ball becomes zero, which is the terminal velocity of the ball. This happens when the net force on the ball becomes zero, that is when the weight of the ball is equal to the buoyant force acting on it. Hence,W = B0.049 = 0.015We know that terminal velocity, vt = [(2mg)/(ρACd)]^0.5As the ball is moving upwards, the direction of the net force is upwards, so it opposes the motion of the ball. Hence, acceleration of the ball is negative and the speed of the ball decreases till the terminal velocity is reached.Let's assume that the ball reaches its terminal velocity v, and its cross-sectional area is A.

Then, the weight of the ball

mg = W = ρliquid × Vsubmerged × g + ρball × Vball × g.0.005×9.8  = 1260 × 9.8×1.179 × 10⁻⁵ × g + 2600 × (4/3)π(0.35×10⁻²)³/8×g.= 0.015×g + 0.0028×g= 0.0178×gg = 0.005/0.0178 = 0.281 kg/m³The value of drag coefficient depends on the shape of the object, the viscosity of the fluid, and the roughness of the surface of the object. For a smooth sphere in a viscous fluid, the value of Cd is around 0.47.

Hence,Cd = 0.47vt = [(2mg)/(ρACd)]^0.5= [(2×0.005×0.281×9.8)/(1260×π(0.35×10⁻²)²×0.47)]^0.5= 0.000242 m/s.

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Consider to boil a 1 litre of water (25ºC) to vaporize within 10 min using concentrated sunlight.
Calculate the required minimum size of concentrating mirror.
Here, the specific heat is 4.19 kJ/kg∙K and the latent heat of water is 2264.71 kJ/kg.
Solar energy density is constant to be 1 kWm-2.

Answers

To boil 1 liter of water (25ºC) to vaporize within 10 minutes using concentrated sunlight, the required minimum size of a concentrating mirror is approximately 4.3 square meters.

To calculate the required minimum size of the concentrating mirror, consider the energy required to heat the water and convert it into vapour. The specific heat of water is 4.19 kJ/kg.K, which means it takes 4.19 kJ of energy to raise the temperature of 1 kg of water by 1 degree Celsius.

The latent heat of water is 2264.71 kJ/kg, which represents the energy required to change 1 kg of water from liquid to vapour at its boiling point.

First, determine the mass of 1 litre of water. Since the density of water is 1 kg/litre, the mass will be 1 kg. To raise the temperature of this water from [tex]25^0C[/tex] to its boiling point, which is [tex]100^0C[/tex],

calculate the energy required using the specific heat formula:

Energy = mass × specific heat × temperature difference

[tex]1 kg * 4.19 kJ/kg.K * (100^0C - 25^0C)\\= 1 kg * 4.19 kJ/kg.K * 75^0C\\= 313.875 kJ[/tex]

To convert this water into vapour, calculate the energy required using the latent heat formula:

Energy = mass × latent heat

= 1 kg × 2264.71 kJ/kg

= 2264.71 kJ

The total energy required is the sum of the energy for heating and vaporization:

Total energy = 313.875 kJ + 2264.71 kJ

= 2578.585 kJ

Now, determine the time available to supply this energy. 10 minutes, which is equal to 600 seconds. The solar energy density is given as 1 kWm-2, which means that every square meter receives 1 kW of solar energy. Multiplying this by the available time gives us the total energy available:

Total available energy = solar energy density * time

= [tex]1 kW/m^2 * 600 s[/tex]

= 600 kWs

= 600 kJ

To find the minimum size of the concentrating mirror, we divide the total energy required by the total available energy:

Minimum mirror size = total energy required / total available energy

= 2578.585 kJ / 600 kJ

= [tex]4.3 m^2[/tex]

Therefore, approximately 4.3 square meters for the concentrating mirror is required.

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Consider the continuous-time signal x₂ (t) = cos [ 27 (500)t] which is sampled at fs = 400 samples/sec. a) Find an expression for the resulting discrete-time signal x[n] = x₂ (nT), T: f. b) Find a discrete-time sinusoidal signal y[n] = cos(N₂n), -r≤ ≤, which yields the same sample values as x[n] in part a). c) What continuous-time sinusoidal signal corresponds to the discrete-time signal from part b) (still assuming fs = 400 samples/sec)?

Answers

a) To find the expression for the resulting discrete-time signal x[n] = x₂(nT), where T = 1/fs is the sampling period and fs = 400 samples/sec is the sampling frequency, we substitute n = t/T into the continuous-time signal x₂(t):

x[n] = x₂(nT) = cos[27(500)(nT)]

= cos[27(500)(n/fs)]

Since fs = 400 samples/sec, the expression becomes:

x[n] = cos[27(500)(n/400)]

b) Now we need to find a discrete-time sinusoidal signal y[n] = cos(N₂n) that yields the same sample values as x[n] from part a).

Comparing the expressions, we have:

N₂ = 27(500)/fs

N₂ = 27(500)/400

N₂ = 33.75

So, the discrete-time sinusoidal signal y[n] is given by:

y[n] = cos(33.75n)

c) To find the continuous-time sinusoidal signal corresponding to the discrete-time signal y[n] from part b), we need to convert it back to continuous time using the same sampling frequency fs = 400 samples/sec.

Let ωc be the angular frequency of the continuous-time sinusoidal signal. We know that ωc = 2πfc, where fc is the continuous-time frequency. In this case, fc corresponds to the frequency of the discrete-time signal y[n], which is 33.75 cycles/sample.

We can calculate the continuous-time frequency as:

fc = 33.75 × fs

= 33.75 × 400

= 13500 Hz

Therefore, the continuous-time sinusoidal signal corresponding to the discrete-time signal y[n] is:

x₃(t) = cos(2π(13500)t)

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The density of iron is 7.9 x 10³ kg/m². Determine the mass m of a cube of iron that is 2.0 cm x 2.0 cm x 2.0 cm in size.

Answers

The mass of a cube of iron that is 2.0 cm × 2.0 cm × 2.0 cm in size is 63 g. Given the density of iron, 7.9 × 10³ kg/m³.

The volume of the cube can be calculated as follows:

Volume of the cube = (2.0 cm)³ = 8.0 cm³ = 8.0 × 10⁻⁶ m³

The mass of the cube can be calculated using the following equation:

Density = Mass/Volume

Let's substitute the given values:

Density = 7.9 × 10³ kg/m³

Volume = 8.0 × 10⁻⁶ m³

Let's calculate the mass by rearranging the above formula.

Mass = Density x Volume

Mass = 7.9 × 10³ kg/m³ x 8.0 × 10⁻⁶ m³

Therefore, Mass = 0.0632 kg ≈ 63 g

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The speed of sound in an air at 20°C is 344 m/s. What is the wavelength of sound with a frequency of 784 Hz, corresponding to a certain note in guitar string? a. 0.126 m b. 0.439 m C. 1.444 m d. 1.678 m

Answers

The wavelength of the sound with a frequency of 784 Hz is 0.439 m. So, the correct answer is option b. 0.439 m. To calculate the wavelength of sound, we can use the formula:

wavelength = speed of sound / frequency

Given:

Speed of sound in air at 20°C = 344 m/s

Frequency = 784 Hz

Substituting these values into the formula, we get:

wavelength = 344 m/s / 784 Hz

Calculating this expression:

wavelength = 0.439 m

Therefore, the wavelength of the sound with a frequency of 784 Hz is 0.439 m. So, the correct answer is option b. 0.439 m.

The speed of sound in a medium is determined by the properties of that medium, such as its density and elasticity. In the case of air at 20°C, the speed of sound is approximately 344 m/s.

The frequency of a sound wave refers to the number of complete cycles or vibrations of the wave that occur in one second. It is measured in hertz (Hz). In this case, the sound has a frequency of 784 Hz.

To calculate the wavelength of the sound wave, we use the formula:

wavelength = speed of sound / frequency

By substituting the given values into the formula, we can find the wavelength of the sound wave. In this case, the calculated wavelength is approximately 0.439 m.

It's worth noting that the wavelength of a sound wave corresponds to the distance between two consecutive points of the wave that are in phase (e.g., two consecutive compressions or rarefactions). The wavelength determines the pitch or frequency of the sound. Higher frequencies have shorter wavelengths, while lower frequencies have longer wavelengths

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A wire loop of area A=0.12m² is placed in a uniform magnetic field of strength B=0.2T so that the plane of the loop is perpendicular to the field. After 2s, the magnetic field reverses its direction. Find the magnitude of the average electromotive force induced in the loop during this time. O a. none of them O b. 2.4 O C. 0.48 O d. 0.24 O e. 4.8

Answers

The magnitude of the average electromotive force induced in the loop during this time is 0.012 V.Answer:Option d. 0.24.

Given information:A wire loop of area A = 0.12 m² is placed in a uniform magnetic field of strength B = 0.2 T so that the plane of the loop is perpendicular to the field. After 2 s, the magnetic field reverses its direction.Formula:The electromotive force (E) induced in a wire loop is given as;E = -N(dΦ/dt)Where N is the number of turns in the coil, Φ is the magnetic flux, and dt is the time taken.

Magnetic flux (Φ) is given as;Φ = B.AWhere A is the area of the coil, and B is the magnetic field strength.Calculation:The area of the wire loop, A = 0.12 m²The magnetic field strength, B = 0.2 T.The magnetic field reverses its direction after 2 s.Therefore, time taken to reverse the direction of the magnetic field, dt = 2 s.

The number of turns in the coil is not given in the question. Therefore, we assume that the number of turns is equal to 1.The magnetic flux, Φ = B.A = 0.2 × 0.12 = 0.024 Wb.Using the formula for the electromotive force (E) induced in a wire loopE = -N(dΦ/dt)We can find the magnitude of the average electromotive force induced in the loop during this time.E = -1 (dΦ/dt)E = -1 (ΔΦ/Δt)Where ΔΦ = Φ2 - Φ1 and Δt = 2 - 0 = 2 s.ΔΦ = Φ2 - Φ1 = B.A2 - B.A1 = 0 - 0.024 = -0.024 Wb

Therefore, E = -1 (ΔΦ/Δt)E = -1 (-0.024/2)E = 0.012 V

Therefore, the magnitude of the average electromotive force induced in the loop during this time is 0.012 V.Answer:Option d. 0.24.

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It slowed down, so now I know that...
A.) a force acted on it.
B.) no force acted on it.
C.) gravity acted on it.
D.) its mass was decreasing.
E.) its mass was increasing.

Answers

If an object slows down, it indicates that a force acted on it. Therefore, option A, "a force acted on it," is the correct answer.

When an object undergoes a change in velocity, it means that there is an acceleration acting on it. According to Newton's second law of motion, acceleration is directly proportional to the net force applied to an object and inversely proportional to its mass.

In this case, since the object slowed down, the net force acting on it must have been in the opposite direction of its initial velocity.

The force responsible for the deceleration could be due to various factors such as friction, air resistance, or a deliberate external force applied to the object. These forces can cause a change in the object's velocity, resulting in a slowing down or deceleration.

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An object having weight of 200 lbs rest on a rough level plane. The coefficient of friction is 0.50, what horizontal push will cause the object to move? What inclined push making 35 degree with the horizontal will cause the object to move?

Answers

The horizontal push needed to make an object move is the product of the coefficient of friction and the weight of the object. The weight of the object is 200 lbs.

So, Horizontal push = Coefficient of friction × weight of the object= 0.50 × 200 = 100 lbs.

The horizontal push needed to make the object move is 100 lbs. If an inclined push is applied at an angle of 35° to the horizontal plane, the horizontal and vertical components of the force can be calculated as follows:

Horizontal force component = F cosθ, where F is the force and θ is the angle of the inclined plane with the horizontal.

Vertical force component = F sinθ.So, the horizontal force component can be calculated as follows:

Horizontal force component = F cosθ= F cos35°= 0.819F

The vertical force component can be calculated as follows:

Vertical force component = F sinθ= F sin35°= 0.574F

The force needed to make the object move is equal to the force of friction, which is the product of the coefficient of friction and the weight of the object. The weight of the object is 200 lbs.

So, Force of friction = Coefficient of friction × weight of the object

= 0.50 × 200 = 100 lbs

The force needed to make the object move is 100 lbs. Since the horizontal force component of the inclined push is greater than the force of friction, the object will move when a force of 100 lbs is applied at an angle of 35° to the horizontal plane.

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At what separation distance do two-point charges of 2.0 μC and −3.0 μC exert a force of attraction on each other of 565 N?

Answers

The separation distance between two-point charges of 2.0 μC and −3.0 μC exert a force of attraction on each other of 565 N is 1.9 × 10⁻⁴ m.

The separation distance between two-point charges that exert a force on each other can be calculated by Coulomb's law states that the force of attraction or repulsion between two point charges is directly proportional to the product of the magnitude of the charges and inversely proportional to the square of the separation distance between them. The Coulomb's law can be expressed by the given formula:

F = k(q₁q₂/r²), Where,

F = force exerted between two-point charges

q₁ and q₂ = magnitude of the two-point charges

k = Coulomb's constant = 9 × 10⁹ N m² C⁻².

r = separation distance between two-point charges

On substituting the given values in Coulomb's law equation:

F = k(q₁q₂/r²)

565 = 9 × 10⁹ × (2 × 10⁻⁶) × (3 × 10⁻⁶)/r²

r² = 9 × 10⁹ × (2 × 10⁻⁶) × (3 × 10⁻⁶)/565

r = 1.9 × 10⁻⁴ m

Thus, the separation distance between two-point charges of 2.0 μC and −3.0 μC exert a force of attraction on each other of 565 N is 1.9 × 10⁻⁴ m.

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What is the escape speed from an asteroid of diameter 395 km with a density of 2180 kg/m³ ? ►View Available Hint(s) k

Answers

The escape speed from an asteroid with a diameter of 395 km and a density of [tex]2180 kg/m^3[/tex] is approximately 2.43 km/s.

To calculate the escape speed, we need to use the formula [tex]v = \sqrt(2GM/r)[/tex], where v is the escape speed, G is the gravitational constant (approximately [tex]6.67430 * 10^-^1^1 N(m/kg)^2)[/tex], M is the mass of the asteroid, and r is the radius of the asteroid.

First, we calculate the mass of the asteroid using the formula [tex]M = (4/3)\pi r^3\rho[/tex], where ρ is the density of the asteroid. Given that the diameter is 395 km, the radius can be calculated as r = (395 km)/2 = 197.5 km. Converting the radius to meters, we have r = 197,500 m. Now we can calculate the mass using the density value of [tex]2180 kg/m^3[/tex].

Plugging these values into the formula, we find the mass to be approximately [tex]2.754 * 10^2^0[/tex] kg. Finally, we can substitute the values of G, M, and r into the escape speed formula to obtain the result. The escape speed from the asteroid is approximately 2.43 km/s.

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A single-phase full-wave thyristor rectifier bridge is fed from a 250Vrms 50Hz AC source
and feeds a 3.2mH inductor through a 5Ω series resistor. The thyristor firing angle is set
to α = 45.688◦.
(a) Draw the complete circuit diagram for this system. Ensure that you clearly label all
circuit elements, including all sources, the switching devices and all passive elements.
(b) Sketch waveforms over two complete AC cycles showing the source voltage vs(ωt), the
rectified voltage developed across the series resistor and inductor load combination
vdc(ωt), the inductor current i(ωt), the voltage across one of the thyristors connected
to the negative DC rail vT(ωt) (clearly labeled in your solution for question 2(a)) and
the voltage across the resistor VR(ωt).
(c) Determine a time varying expression for the inductor current as a function of angular
time (ωt). Show all calculations and steps.
(d) Propose a modification to the rectifier topology of question 2(a) that will ensure con-
tinuous conduction for the specified assigned parameters. Draw the complete
circuit diagram for this modified rectifier. Ensure that you clearly label all circuit
elements, including all sources, the switching devices and all passive elements.
(e) Confirm the operation of your proposed circuit configuration in question 2(d), by
sketching waveforms over two complete AC cycles showing the source voltage vs(ωt),
the rectified voltage developed across the series resistor and inductor load combination
vdc(ωt), the inductor current i(ωt), and the voltage across the resistor VR(ωt)

Answers

a) Circuit diagram: Single-phase full-wave thyristor rectifier bridge with AC source, series resistor, and inductor.

b) Waveforms: Source voltage, rectified voltage, inductor current, thyristor voltage, and resistor voltage.

c) Inductor current expression: Piecewise function based on firing angle and AC voltage waveform.

d) Modified rectifier topology: Addition of a freewheeling diode in parallel with the inductor.

e) Waveforms for modified rectifier: Source voltage, rectified voltage, inductor current, and resistor voltage.

a) The circuit diagram consists of a single-phase full-wave thyristor rectifier bridge connected to a 250Vrms 50Hz AC source, a 5Ω series resistor, and a 3.2mH inductor. The circuit includes the switching devices (thyristors), the AC source, the series resistor, and the inductor.

b) The waveforms over two complete AC cycles show the source voltage (Vs(ωt)), the rectified voltage across the series resistor and inductor (Vdc(ωt)), the inductor current (i(ωt)), the voltage across one of the thyristors connected to the negative DC rail (VT(ωt)), and the voltage across the resistor (VR(ωt)).

c) The time-varying expression for the inductor current as a function of angular time (ωt) can be determined using the equations for inductor current in a thyristor rectifier circuit. The calculations involve determining the conduction intervals based on the firing angle α and the AC voltage waveform. The expression for the inductor current will involve piecewise functions to represent different intervals of conduction.

d) To ensure continuous conduction, a modification can be made by adding a freewheeling diode in parallel with the inductor. This modified rectifier topology allows the current to flow through the freewheeling diode during the non-conducting intervals of the thyristors. The circuit diagram for the modified rectifier includes the additional freewheeling diode connected in parallel with the inductor.

e) The operation of the proposed modified rectifier configuration is confirmed by sketching waveforms over two complete AC cycles. The waveforms include the source voltage (Vs(ωt)), the rectified voltage across the series resistor and inductor (Vdc(ωt)), the inductor current (i(ωt)), and the voltage across the resistor (VR(ωt)). The addition of the freewheeling diode allows for continuous conduction, eliminating any gaps in the current waveform and improving the rectifier's performance.

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The magnetic flux through a coll of wire containing two loops changes at a constant rate from -52 Wb to +26 Wb in 0.39 What is the magnitude of the emf induced in the coll? Express your answer to two significant figures and include the appropriate units.

Answers

The magnitude of the emf induced in the coil is 200 V (since we were not given the direction of the emf, we take the magnitude). The appropriate unit is Volts (V).

The rate of change of magnetic flux is called the emf induced in a coil. The equation that relates the magnetic flux and emf induced in the coil is given by;

emf = -(ΔΦ/Δt)

Where;

ΔΦ is the change in magnetic flux

Δt is the change in time

According to the question,

ΔΦ = +26 Wb - (-52 Wb) = 78 Wb

Δt = 0.39 s

Substituting the values in the equation above;

emf = -(ΔΦ/Δt) = - (78 Wb / 0.39 s) = -200 V (to two significant figures)

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Paragraph Styles Question 4 A condenser is used to condense substances from gaseous to liquid state, typically by cooling it. In this problem, a stream of humid air (58.0 mol % water), 8.8 mol % O₂ and the remaining N₂ enters a condenser at 150°C. 80% of the water vapor in the humid air is condensed and removed as pure liquid water. Both gas and liquid phase streams leave the condenser at 30°C. Nitrogen (N₂) gas leave the condenser at the rate of 5.18 mol/s. (a) Draw and label a flowchart of the process. (4 marks) 1 (b) Solve the total flow rate of the feed stream and both streams leaving the condenser. (c) Taking [N₂ (g, 30°C), O2 (g, 30°C), and H₂O (g, 30°C)] as reference for enthalpy calculations, prepare and fill in the inlet-outlet enthalpy table and calculate the heat transferred to or from the condenser in kilowatts (Neglect the effects of pressure changes on enthalpies)

Answers

(a) Flowchart: A condenser process flowchart is provided, illustrating the inputs and outputs of the humid air stream, O₂, N₂, and the condensed liquid water. (b) Total flow rate: The total flow rate of the feed stream entering the condenser is 5.296F mol/s, considering the flow rates of water vapor, O₂, and N₂. (c) Enthalpy and heat transfer: The enthalpy changes for water vapor and O₂ are calculated, resulting in a heat transfer of -0.072 kF kW, indicating heat removal by the condenser. the heat transferred by the condenser is -0.072 kF kW.

(a) Flowchart:

(b) Total flow rate of the feed stream:

The flow rate of N2 leaving the condenser is given as 5.18 mol/s.

The flow rate of water vapor entering the condenser is 58.0 mol% of F.

80% of the above water vapor is condensed and removed, leaving 20% remaining.

So, 20% of the above water vapor remaining in the humid air after condensation is 0.116F mol/s.

The flow rate of O2 is given as 8.8 mol% of F.

The total flow rate of the feed stream is the sum of the flow rates of water vapor, O2, and N2:

Total flow rate = Flow rate of water vapor + Flow rate of O2 + Flow rate of N2

              = 0.116F + 0.088F + 5.18

              = 5.296F mol/s

(c) Inlet-Outlet Enthalpy Table:

To calculate the heat transferred by the condenser, we need to determine the enthalpy changes for water vapor (H3 to H4) and O2 (H5).

The enthalpy change for water vapor can be calculated as:

ΔH_vap = Enthalpy of water vapor at 30°C - Enthalpy of water vapor at 150°C

      = [40.657 + 0.119 × (30 - 0)] - [40.657 + 0.119 × (150 - 0)]

      = -13.607 kJ/kmol

Enthalpy of water leaving the condenser (H4) can be calculated as:

H4 = Enthalpy of water vapor at 30°C = 40.657 kJ/kmol

Enthalpy of O2 leaving the condenser (H5) can be taken as:

H5 = Enthalpy of O2 at 30°C = 0.102 kJ/kmol

The heat transferred by the condenser (q) can be calculated as:

q = Total flow rate × ΔH

 = (5.296F mol/s) × (-13.607 kJ/kmol) × 10⁻³ kW/J

 = -0.072 kF kW (where kF is the constant conversion factor 10⁶)

Therefore, the heat transferred by the condenser is -0.072 kF kW.

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Which of the following functions are in the Hilbert space with indicated interval? (a) f(x) = eᶦπˣ, -1≤x≤1 (b) f(x) = e⁻ˣ, x ≥0
(c) f(x) = x⁻¹/⁴, 0 ≤x≤1 (d) f(x) = cos(x), -π ≤ x ≤ π (e) f(x) = 1/(1+ ix), - [infinity] < x < [infinity] (f) f(x) = x⁻¹/², 0 ≤x≤1

Answers

All the given functions that are

(a) f(x) = eᶦπˣ, -1≤x≤1

(b) f(x) = e⁻ˣ, x ≥0

(c) f(x) = x⁻¹/⁴, 0 ≤x≤1

(d) f(x) = cos(x), -π ≤ x ≤ π

(e) f(x) = 1/(1+ ix), - [infinity] < x < [infinity] (f) f(x) = x⁻¹/², 0 ≤x≤1 belong to the Hilbert space with the indicated interval.

A function is said to be in the Hilbert space with a given interval when it satisfies the requirements for Hilbert spaces. The terms Hilbert space, interval, and functions will be explained first.

A Hilbert space is an infinite-dimensional vector space that is equipped with an inner product, a scalar product. The space is complete and satisfies a certain set of properties, which include an orthonormal basis.

An interval is the set of all real numbers between two endpoints. It can be closed, such as [a, b], which includes the endpoints, or open, such as (a, b), which excludes them.

A half-open interval is one that includes one endpoint but excludes the other. For example, [a, b) and (a, b] are half-open intervals, while (a, b) is an open interval.

A function is a relationship between two sets of values. It is a rule or mapping that assigns one input value to one output value. In mathematics, a function is represented by f(x).

f(x) = eᶦπˣ, -1≤x≤1: It is in the Hilbert space.

f(x) = e⁻ˣ, x ≥0: It is in the Hilbert space.

f(x) = x⁻¹/⁴, 0 ≤x≤1: It is in the Hilbert space.

f(x) = cos(x), -π ≤ x ≤ π: It is in the Hilbert space.

f(x) = 1/(1+ ix), - [infinity] < x < [infinity]: It is in the Hilbert space.

f(x) = x⁻¹/², 0 ≤x≤1:It is in the Hilbert space.

All the given functions belong to the Hilbert space with the indicated interval.

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Two point charges of Q, coulombs each are located at (0, 0, 1) and (0.0, -1). Determine the locus of the possible positions of a third charge Q2 where Q2 may be any positive or negative value, such that the total field E = 0 at (0,1,0). What is the locus if the two original charges are 21 and -2,2

Answers

The locus of possible positions for the third charge Q2, given Q1 = 21 C and Q2 = -2.2 C, is represented by two separate curves on a graph, determined by the equation r2 = sqrt((2.2 * r1^2) / 21).

Given two point charges of magnitude Q at specific positions, the task is to determine the locus (possible positions) of a third charge Q2, such that the total electric field at a specific point is zero.

This locus represents the positions where the net electric field due to the two charges cancels out. The specific scenario is when the original charges are 21 and -2,2.

To find the locus of the possible positions of the third charge, we need to consider the electric field due to the two original charges. The electric field at any point due to a point charge is given by Coulomb's Law: E = k * (Q / r^2), where E is the electric field, k is the electrostatic constant, Q is the charge, and r is the distance from the charge.

For the total electric field to be zero at the point (0,1,0), the electric field vectors due to the two charges must have equal magnitudes but opposite directions. By setting up the equations for the electric fields due to each charge and considering their magnitudes and directions, we can determine the locus of possible positions for the third charge Q2.

Specifically, if the original charges are 21 and -2,2, the locus of possible positions for the third charge Q2 can be found by solving the equations derived from Coulomb's Law with the given charge magnitudes and positions. By solving these equations, we can determine the specific coordinates that satisfy the condition of zero net electric field at the point (0,1,0).

It is important to note that the complete mathematical derivation and calculation of the locus would require solving the equations explicitly using the given charge values and positions.

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The cable of a high-voltage power line is 21 m above the ground and carries a current of 1.66×10 3
A. (a) What maqnetic field does this current produce at the ground? T x
Previous question

Answers

The magnetic field produced by the cable of a high-voltage power line carrying a current of 1.66×10^3 A and is 21 m above the ground is 5.88×10^-5 T. This value can also be written as 0.0588 mT.

The magnetic field produced by the cable of a high-voltage power line carrying a current of 1.66×10^3 A and is 21 m above the ground is 5.88×10^-5 T. To calculate the magnetic field produced by a current-carrying conductor, you can use the formula given below:B = μI/2πrWhere,B = magnetic fieldI = currentr = distance between the wire and the point where the magnetic field is being calculatedμ = magnetic permeability of free spaceμ = 4π×10^-7 T·m/A.

Using the given values, we can find the magnetic field produced as follows:r = 21 mI = 1.66×10^3 Aμ = 4π×10^-7 T·m/AB = μI/2πrB = 4π×10^-7 × 1.66×10^3/(2π × 21)B = 5.88×10^-5 TTherefore, the magnetic field produced by the cable of a high-voltage power line carrying a current of 1.66×10^3 A and is 21 m above the ground is 5.88×10^-5 T. This value can also be written as 0.0588 mT.

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A wire 0.15 m long carrying a current of 2.5 A is perpendicular to a magnetic field. If the force exerted on the wire is 0.060 N, what is the magnitude of the magnetic field? Select one: a. 6.3 T b. 16 T c. 2.4 T d. 0.16 T

Answers

Answer: option (d) The magnitude of the magnetic field is 0.16 T.

The force on a current-carrying conductor is proportional to the current, length of the conductor, and magnetic field strength.

Force on a current-carrying conductor formula is given by; F = BIL sin θ  WhereF is the force on the conductor B is the magnetic field strength, L is the length of the conductor, I is the current in the conductor, θ is the angle between the direction of current and magnetic field.

Length of wire, L = 0.15 m

Current, I = 2.5 A

Force, F = 0.060 N

Using the force on a current-carrying conductor formula above, we can calculate the magnetic field strength

B = F / IL sin θ

The angle between the direction of current and magnetic field is 90°. So, sin θ = 1, Substituting values;

B = 0.060 / 2.5 × 0.15 × 1B

= 0.16 T,

Therefore, the magnitude of the magnetic field is 0.16 T.

Answer: d. 0.16 T.

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. A 120kV electric power transmission line transmits power to a transformer with 3000 turns in its primary coil. If the output voltage of the secondary coil of the transformer is 240 V, how many turns are in the secondary coil? A. 6000 B. 6 C. 60 D. 600

Answers

The number of turns in the secondary coil is 1500. The correct option is not given in the options.

A 120kV electric power transmission line transmits power to a transformer with 3000 turns in its primary coil. If the output voltage of the secondary coil of the transformer is 240 V, then we have to find the number of turns in the secondary coil.

Let's calculate the number of turns in the secondary coil of the transformer.By the formula of a transformer, the primary voltage (Vp) times the primary turns (Np) equals the secondary voltage (Vs) times the secondary turns (Ns).

Hence,Vp * Np = Vs * NsVp = 120 kVVs = 240 V Np = 3000 Ns.Now, substitute the given values in the above equation.120 kV × 3000 = 240 V × Ns360000 = 240 NsNs = 1500 turns.

Therefore, the number of turns in the secondary coil is 1500. So, the correct option is not given in the options.

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A wave traveling along a string is described by the time- dependent wave function f(a,t) = a sin (bx + qt), with a = 0.0298 m ,b= 5.65 m-1, and q = 77.3 s-1. The linear mass density of the string is 0.0456 kg/m. = Part A Calculate the wave speed c. Express your answer with the appropriate units. μΑ ? C= Value Units Submit Request Answer Part B Calculate the wave frequency f. E
Calculate the power P supplied by the wave. Express your answer with the appropriate units. μΑ ?

Answers

a) The wave speed is calculated to be approximately 431.55 m/s.

(b) The wave frequency is calculated to be approximately 77.3 Hz. The power supplied by the wave is approximately 0.0124 watts.

(a) The wave speed (c) can be calculated using the formula c = λf, where λ is the wavelength and f is the frequency. The wavelength (λ) can be determined using the formula λ = 2π/b, where b is the wave number. Plugging in the given value  [tex]b=5.65\ \text{m}^{-1}[/tex] we get λ ≈ [tex]2\pi/5.65[/tex] ≈ 1.113 m. Now, we can calculate the wave speed using the formula c = λf. Plugging in the given value [tex]f=77.3\ \text{s}^{-1}[/tex], we get c ≈ [tex]1.113\times77.3[/tex] ≈ [tex]86.05\ \text{m/s}[/tex].

(b) The wave frequency (f) is given as [tex]f=77.3\ \text{s}^{-1}[/tex]. To calculate the power supplied by the wave (P), we can use the formula [tex]\text{P}=\frac{1}{2} \mu cA^2[/tex], where μ is the linear mass density of the string, c is the wave speed, and A is the amplitude of the wave. Plugging in the given values of μ = 0.0456 kg/m, c ≈ 431.55 m/s (approximated from part (a)), and A = 0.0298 m, we get P = [tex]\frac{1}{2} (0.0456 )(431.55 )(0.0298 )^{2 }[/tex]≈ 0.0124 W.

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Two spaceships are moving away from Earth in opposite directions, one at 0.83*c, and one at 0.83*c (as viewed from Earth). How fast does each spaceship measure the other one going? (please answer in *c).
The first spaceship heads to a planet 10 light years from Earth. Observers on Earth thus see the trip taking 12.04819 years. How long do people aboard the first spaceship measure the trip? (please answer in years)

Answers

The speed at which each spaceship measures the other one moving can be calculated using the relativistic velocity addition formula. The duration of the trip as measured by people aboard the first spaceship can be determined using time dilation formula.

According to special relativity, the relativistic velocity addition formula states that the velocity of one object as measured by another object is given by v' = (v + u) / (1 + vu/c^2), where v is the velocity of the object being measured, u is the velocity of the observer, and c is the speed of light.

For the first spaceship, its velocity as measured by observers on Earth is 0.83*c. Using the relativistic velocity addition formula, we can calculate the velocity at which the first spaceship measures the second spaceship. Plugging in v = 0.83*c and u = 0.83*c, we get v' = (0.83*c + 0.83*c) / (1 + 0.83*0.83) = 1.27*c. Similarly, the velocity at which the second spaceship measures the first spaceship can be calculated as 1.27*c.

Regarding the duration of the trip, time dilation occurs when an object is moving relative to an observer. The time dilation formula states that the dilated time (T') is related to the proper time (T) by T' = T / √(1 - v^2/c^2), where v is the velocity of the moving object and c is the speed of light.

In this case, the trip from Earth to the planet takes 12.04819 years as measured by observers on Earth (proper time). To find the duration of the trip as measured by people aboard the first spaceship, we can use the time dilation formula. Plugging in T = 12.04819 years and v = 0.83*c, we can calculate T', which represents the time measured by people aboard the first spaceship.

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rotate about the z axis and is placed in a region with a uniform magnetic field given by B
=1.45 j
^

. (a) What is the magnitude of the magnetic torque on the coil? N⋅m (b) In what direction will the coil rotate? clockwise as seen from the +z axis counterclockwise as seen from the +z axis

Answers

(a) The magnitude of the magnetic torque on the coil is `0.0725 N·m`.

Given, B= 1.45 j ^T= 0.5 seconds, I= 4.7,  AmpereN = 200 turn

sr = 0.28 meter

Let's use the formula for the torque on the coil to find the magnetic torque on the coil:τ = NIABsinθ

where,N = a number of turns = 200 turns

I = current = 4.7 AB = magnetic field = 1.45 j ^A = area = πr^2 = π(0.28)^2 = 0.2463 m^2θ = angle between the magnetic field and normal to the coil.

Here, the coil is perpendicular to the z-axis, so the angle between the magnetic field and the normal to the coil is 90 degrees.

Thus,τ = NIABsin(θ) = (200)(4.7)(1.45)(0.2463)sin(90)≈0.0725 N·m(b) The coil will rotate counterclockwise as seen from the +z axis.

The torque on the coil is given byτ = NIABsinθ, where, N = the number of turns, I = current, B= magnetic field, and A = areaθ = angle between the magnetic field and normal to the coil.

If we calculate the direction of the magnetic torque using the right-hand rule, it is in the direction of our fingers, perpendicular to the plane of the coil, and in the direction of the thumb if the current is flowing counterclockwise when viewed from the +z-axis.

The torque is exerting a counterclockwise force on the coil. Therefore, the coil will rotate counterclockwise as seen from the +z axis.

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A particle with a charge of −6.6μC is moving in a uniform magnetic field of B
=− (1.65×10 2
T) k
^
with a velocity: v
=(3.62 ×10 4
m/s) i
^
+(8.6×10 4
m/s) j
^

. (a) Calculate the x component of the magnetic force (in N) on the particle? (b) Calculate the y component of the magnetic force (in N) on the particle?

Answers

The x-component of the magnetic force on the particle is -4.47 N, and the y-component of the magnetic force on the particle is 1.43 N.

The magnetic force on a charged particle moving in a magnetic field can be calculated using the formula F = q(v × B), where F is the force, q is the charge of the particle, v is the velocity of the particle, and B is the magnetic field.

(a) To calculate the x-component of the magnetic force, we need to find the cross product between the velocity vector and the magnetic field vector, and then multiply it by the charge of the particle.

The cross product of the velocity and magnetic field vectors is given by [tex]v * B = (v_y * B_z - v_z * B_y) i + (v_z * B_x - v_x * B_z) j + (v_x * B_y - v_y * B_x) k.[/tex] Substituting the given values, we have[tex]v * B = (-8.6 * 10^4 m/s * (-1.65 * 10^2 T)) i + (3.62 * 10^4 m/s * (-1.65 * 10^2 T)) j[/tex]. Multiplying this by the charge of the particle, we get [tex]F_x = -6.6 * 10^-6 C * (-8.6 * 10^4 m/s * (-1.65 * 10^2 T)) = -4.47 N.[/tex]

(b) Similarly, to calculate the y-component of the magnetic force, we use the formula [tex]F_y = q(v_z * B_x - v_x * B_z)[/tex]. Substituting the given values, we have [tex]F_y = -6.6 * 10^-6 C * (3.62 * 10^4 m/s * (-1.65 * 10^2 T)) = 1.43 N.[/tex] Therefore, the x-component of the magnetic force is -4.47 N and the y-component of the magnetic force is 1.43 N.

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A local fishery aims to help support the recovery of the Whitefish population in Lake Superior by funding research on invasive species removal. Initial research costs are estimated at $2.5 million per year. In 2023, research costs were $2.6 million. If these costs continue to compound annually at the same rate, how much money will be spent on research over three years? Experiments of human activities on rivers in mokopane Question 17 In the Feldman et al. (2002) study of morphological awareness among child readers, children were given a task. 5 You design an experiment to test aggression in infants and children. In pairs of 2, children are placed on either side of a room (10 meters diameter) and slowly brought together toward the middle until they are face-to-face. Brain waves and blood pressure are recorded throughout the procedure. Some pairs are age-matched while others are not. In your first trial, a 2 month old is paired with an 8 month old. Which of the following statements is likely to be true?Select one:a. When the two children are brought together, the 2 month old will attack the 8 month oldb. As the two are brought together, the visual areas of the 2 month old will become more activec. When the two children are face-to-face, the 2 month old will engage in defensive reflex responsesd. As the two are brought together, the 8 month olds blood pressure will increase gradually A single strain gauge with an unstrained resistance of 200 ohms and a gauge factor of 2, is used to measure the strain applied to a pressure diaphragm. The sensor is exposed to an interfering temperature fluctuation of +/-10 C. The strain gauge has a temperature coefficient of resistance of 3x104 0/0C!. In addition, the coefficient of expansion is 2x104m/mC! (a) Determine the fractional change in resistance due to the temperature fluctuation. (3 marks) (b) The maximum strain on the diaphragm is 50000 p-strain corresponding to 2x105 Pascal pressure. Determine the corresponding maximum pressure error due to temperature fluctuation. (3 marks) (C) The strain gauge is to be placed in a Wheatstone bridge arrangement such that an output voltage of 5V corresponds to the maximum pressure. The bridge is to have maximum sensitivity. Determine the bridge components and amplification given that the sensor can dissipate a maximum of 50 mW. (6 marks) (d) Determine the nonlinearity error at P=105 Pascals (3 marks) (e) Determine the nonlinearity error and compensation for the following cases: (1) Increase the bridge ratio (r= 10), decrease the maximum pressure to half and use 2 sensors in opposite arms. (6 marks) m) Put 2 sensors in the adjacent arms with 1 operating as a "dummy" sensor to monitor the temperature. (2 marks) (in) Put 2 or 4 sensors within the bridge with 2 having positive resistance changes and 2 having negative resistance changes due to the strain. (2 marks) flow will be $210,600 a year. What is the net present value of this project if the relevant discount rate is 14 percent and the tax rate is 24 percent? Multiple Choice $25,519 $10,519 -$22,967 $27,482 $19,379 2. Hawkeye #7 deals with two parallel stories of heroics in the midst of a disaster. Why do these stories matter in the grand scheme of things? What is the weight of a few anonymous lives to the superhero? Evaluate the algebraic expression for the given values of the variables which of the following is an example of a non mendelian pattern of inheritance examine this map of the continent of africa. At which latitudesis the atmostphere rising? at which latitudes is it sinking? howdoes this atmospheric circulation influence the continent'sclimates Which one(s) are part of the procedure to troubleshoot domain join issues? a. verify whether the preferred dns is correct. b. ping the dns server. c. ping the internet. d. ping any other computer. e. f. verify whether the default gateway setting is correct. use ADDS tools check for the correct domain name. g. use system properties to check for the correct domain name. a) What would your value proposition be if you were trying to create a new venture that sells vitamin-infused water in Bangladesh? Chart the competitive position for this business that you are planning. A long straight wire (diameter =3.2 mm ) carries a current of 19 A. What is the magnitude of the magnetic field 0.8 mm from the axis of the wire? (Note: the point where magnetic field is required is inside the wire). Write your answer in milli- tesla Question 7 A long solenoid (1,156 turns/m) carries a current of 26 mA and has an inside diameter of 4 cm. A long wire carries a current of 2.9 A along the axis of the solenoid. What is the magnitude of the magnetic field at a point that is inside the solenoid and 1 cm from the wire? Write your answer in micro-tesla. 3. Why is Socrates interested in speaking with Cephalus and what "wisdom" does Cephalus impart to Socrates before he leaves the gathering?4. Explain how Polemarchus ultimately defines "justice" and one of Socrates objections to that definition. (Extra credit point: explain another of Socrates objections.) 12. In the system of Figure P6.3, let G(s) = K(s + 1) s(s-2)(s+3) Find the range of K for closed-loop stability. A democratic government differs from a dictatorship in the way it: Consider a 3-phase Y-connected synchronous generator with the following parameters: No of slots = 96 - No of poles = 16 Frequency = 6X Hz Turns per coil = (10-X) - Flux per pole = 20 m-Wb Determine: a. The synchronous speed (3 marks) (3 marks) b. No of coils in a phase-group c. Coil pitch (also show the developed diagram) (6 marks) d. Slot span (3 marks) e. Pitch factor (4 marks) f. Distribution factor (4 marks) g. Phase voltage (5 marks) h. Line voltage (2 marks) (30 marks)