The correct answers are:
A. E₀ = 626.0924 MeV
B. m = 626.0924 MeV/c²
C. p = 2137.2172 MeV/c²
H. K = 1893.6995 MeV
K. E = 1979.8919 MeV
For a particle with mass m = 1.3367 x 10⁻²⁷ kg moving at a speed of v = 0.90c, we can calculate the values as follows:
The rest energy E₀ is given by the equation E₀ = mc², where c is the speed of light. Substituting the given values, we find E₀ = 626.0924 MeV (A).
The rest mass m is given directly as m = 626.0924 MeV/c² (B).
The momentum p can be calculated using the relativistic momentum equation p = γmv, where γ is the Lorentz factor given by γ = 1/√(1 - v²/c²). Plugging in the values, we get p = 2137.2172 MeV/c² (C).
The kinetic energy K can be determined using the equation K = E - E₀, where E is the relativistic total energy. The relativistic total energy is given by E = γmc². Substituting the values, we find K = 1893.6995 MeV (H) and E = 1979.8919 MeV (K).
Therefore, the correct answers are A, B, C, H, and K.
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Gaussian beam propagation. A Gaussian beam of wavelength λ0= 10.6 um has widths W1= 1.699 mm and W2= 3.38 mm at two points separated by a distance d= 10 cm. Determine (a) the location of the waist from the first point. (b) the waist radius W0.
For the Gaussian beam propagation, the location of the waist from the first point is 5.09 cm and the waist radius is 104 μm.
Gaussian beam wavelength, λ0 = 10.6 um
Width of the beam at first point, W1 = 1.699 mm
Width of the beam at second point, W2 = 3.38 mm
Separation between the points, d = 10 cm
Gaussian beam width at a point Z is given as,
(Z) = W0 * √[1+(λ0*Z/π*W0^2)^2] Where, W0 is the waist radius.
Location of the waist from the first point, Z1 is given by,
Z1 = d(W1^2+W2^2)/4(W2^2-W1^2) =10cm(1.699^2+3.38^2)/4(3.38^2-1.699^2)≈ 5.09 cm
The waist radius W0 is given by,
W0 = W1/√[1+(λ0*Z1/π*W1^2)^2]
W0 = 1.699/√[1+(10.6*5.09/π*1.699^2)^2]≈ 104 um
Therefore, the location of the waist from the first point is 5.09 cm and the waist radius is 104 μm.
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A 10 kg block is sliding down a vertical wall while being pushed by an external force as shown in the figure. What is the magnitude of the acceleration of the block (in m/s2), if the coefficient of kinetic friction between the wall and the block is μk = 0.28, the magnitude of the external force is 54 N, and the angle Θ is 36 degrees?
A 10 kg block is sliding down a vertical wall while being pushed by an external force. The magnitude of the acceleration of the block is 2.656 m/s².
To find the magnitude of the acceleration of the block, we need to consider the forces acting on it. There are two main forces involved: the external force pushing the block and the force of friction opposing its motion.
The force of friction can be calculated using the equation F_friction = μk * F_normal, where F_normal is the normal force exerted by the wall on the block. In this case, the normal force is equal to the weight of the block, which is F_normal = m * g, where m is the mass of the block (10 kg) and g is the acceleration due to gravity (9.8 m/s²).
Substituting the values, we have F_friction = (0.28) * (10 kg) * (9.8 m/s²) = 27.44 N. The net force acting on the block is the difference between the external force and the force of friction: F_net = F_external - F_friction = 54 N - 27.44 N = 26.56 N.
Now, we can use Newton's second law, F = m * a, where F is the net force and m is the mass of the block, to find the acceleration: a = F_net / m = 26.56 N / 10 kg = 2.656 m/s².
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George, who stands 2 feet tall, finds himself 16 feet in front of a convex lens and he sees his image reflected 22 feet behind the lens. What is the focal length of the lens?
The focal length of the given convex lens is approximately -176 feet.
To find the focal length of the convex lens, we can use the lens formula:
1/f = 1/v - 1/u
Where:
- f is the focal length of the lens
- v is the image distance (distance of the image from the lens)
- u is the object distance (distance of the object from the lens)
George sees his image reflected 22 feet behind the lens (v = -22 feet) and he stands 16 feet in front of the lens (u = 16 feet), we can substitute these values into the lens formula:
1/f = 1/(-22) - 1/16
Simplifying the equation:
1/f = -16/(16 * -22) - 22/(22 * 16)
1/f = -1/352 - 1/352
1/f = -2/352
Now, we can find the reciprocal of both sides of the equation to solve for f:
f = 352/-2
f = -176
Therefore, the focal length of the convex lens is -176 feet.
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A force of 100 N is used to raise a 10.0kg box from rest on the ground to rest on a nearby shelf 2.00 m above the ground. How much work was done in raising the box?
The work done in raising the box is 200 J. To sum up, when a force of 100 N is used to lift a 10.0 kg box from rest on the ground to rest on a nearby shelf 2.00 m above the ground, the work done in raising the box is 200 J.
The work done when a force is used to lift an object is determined by the formula W = Fd. In this formula, W refers to work, F refers to force, and d refers to distance. When a force of 100 N is used to raise a 10.0 kg box from rest on the ground to rest on a nearby shelf 2.00 m above the ground, the work done is determined by the formula W = Fd.Let's substitute the given values into the formula W = Fd to calculate the work done.W = Fd= (100 N)(2.00 m)= 200 JTherefore, the work done in raising the box is 200 J. To sum up, when a force of 100 N is used to lift a 10.0 kg box from rest on the ground to rest on a nearby shelf 2.00 m above the ground, the work done in raising the box is 200 J.
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The behavior of electromagnetic radiation can be described using a wave model or a particle model (photon). For each of the following phenomena, describe how electromagnetic radiation behaves in each and explain which behavior it represents most closely. a) Photoelectric effect. b) Black body radiation
In the photoelectric effect, electromagnetic radiation (such as light) interacts with matter(causes the emission of electrons). Black body radiation refers to the emission of electromagnetic radiation from a perfect black body.
a) Photoelectric effect: According to the particle model of electromagnetic radiation, known as the photon model, light is composed of discrete packets of energy called photons.
When photons strike the metal surface, they transfer their energy to the electrons in the atoms of the material, enabling the electrons to overcome the binding forces and be ejected from the surface.
The particle model of electromagnetic radiation (photons) closely represents the behavior of light in the photoelectric effect. This is because the photoelectric effect can be explained by the interaction of individual photons with electrons, where the energy of each photon is directly related to the energy required to remove an electron from the material.
Furthermore, the photoelectric effect exhibits specific characteristics, such as the threshold frequency below which no electrons are emitted, and the direct proportionality between the intensity (number of photons) and the rate of electron emission, which align with the particle nature of light.
b) Black body radiation: The behavior of electromagnetic radiation in black body radiation can be described by both the wave model and the particle model.
According to the wave model, black body radiation is explained through the concept of standing waves within a cavity. The radiation within the cavity is characterized by different wavelengths, and the distribution of energy among these wavelengths follows the Planck radiation law and the Stefan-Boltzmann law.
These laws describe how the intensity and spectral distribution of radiation depend on temperature and can be accurately predicted using the wave model.
However, the particle model also plays a crucial role in understanding black body radiation. Max Planck proposed the concept of quantization, suggesting that the energy of electromagnetic radiation is quantized into discrete packets (quanta) called photons.
Planck's theory successfully explained the observed spectral distribution of black body radiation by assuming that the energy of radiation is proportional to the frequency of the photons. This breakthrough led to the development of quantum mechanics.
In summary, while the wave model provides a foundation for understanding the distribution and characteristics of black body radiation, the particle model (photons) is indispensable for explaining the energy quantization and the discrete nature of electromagnetic radiation involved in the phenomenon.
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DETAILS OSCOLPHYS2016 12.3.P.025. MY NOTES ASK YOUR TEACHER Hoover Dam on the Colorado River is the highest dam in the United States at 221 m, with an output of 1300 MW The dam generates electricity with water taken from a depth of 110 m and an average flow rate of 650 m³/s. (a) Calculate the power in this fow in watts. (b) What is the ratio of this power to the facility's average of 680 MW? [-/2.85 Points) DETAILS OSCOLPHYS2016 12.4.P.030. MY NOTES ASK YOUR TEACHER
a) The power in the flow of water is approximately 714 MW.
b) The ratio of the power in the flow of water to the facility's average power is approximately 1.05.
(a) To calculate the power in the flow of water, we use the formula:
[tex]\[ P = \rho \cdot g \cdot Q \cdot h \][/tex]
where P is the power, [tex]\( \rho \)[/tex] is the density of water, g is the acceleration due to gravity, Q is the flow rate of water, and h is the depth.
Given that the depth is 110 m, the flow rate is 650 m³/s, the density of water is approximately 1000 kg/m³, and the acceleration due to gravity is 9.8 m/s², we can calculate the power:
[tex]\[ P = (1000 \, \text{kg/m}^3) \cdot (9.8 \, \text{m/s}^2) \cdot (650 \, \text{m}^3/\text{s}) \cdot (110 \, \text{m}) \approx 7.14 \times 10^8 \, \text{W} \][/tex]
(b) To find the ratio of this power to the facility's average power of 680 MW, we divide the power from part (a) by 680 MW:
[tex]\[ \text{Ratio} = \frac{7.14 \times 10^8 \, \text{W}}{680 \times 10^6 \, \text{W}} \approx 1.05 \][/tex]
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A wire of length L0 carries a current in the -j direction in a region of field
magnetic B= B=B0k . Thus, the magnetic force on the wire points towards:
A) +j, B) –j, C) +i, D) –i
Justify your answers with equations and arguments
The magnetic force on the wire points towards the -i direction. The correct answer is option D) –i.
A wire of length L0 carries a current in the -j direction in a region of magnetic field B = B0k. Thus, the magnetic force on the wire points towards the -i direction. Let's derive the justification for this answer below.When a wire carrying current is placed in a magnetic field, it experiences a magnetic force. The direction of the force is given by the right-hand rule, which states that if you point your right thumb in the direction of the current and your fingers in the direction of the magnetic field, the force on the wire will be perpendicular to both, and will point in the direction given by your palm.
In this case, the current is in the -j direction, and the magnetic field is in the k direction, so the force will be in the -i direction. We can derive this mathematically using the cross product:F = I L x Bwhere F is the force, I is the current, L is the length of the wire, and B is the magnetic field. In this case, L is in the -j direction and B is in the k direction, so:L = -jB = B0kPlugging in these values, we get:F = I L x B = I (-j) x B0k = IB0iSince the current is in the -j direction, we have I = -I0j, so:F = -I0B0iTherefore, the magnetic force on the wire points towards the -i direction. The correct answer is option D) –i.
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A neutron star results when a star in its final stages collapses due to gravitational pressure, forcing the electrons to combine with the protons in the nucleus and converting them into neutrons. (a) Assuming that a neutron star has a mass of 3.00×10 30
kg and a radius of 1.20×10 3
m, determine the density of a neutron star. ×10 20
kg/m 3
(b) How much would 1.0 cm 3
(the size of a sugar cube) of this material weigh at Earth's surface? ×10 15
N
(a) Density of neutron star = 3.27 × 10¹⁷ kg/m³
(b) Weight of 1.0 cm³ neutron star at Earth's surface = 3.21 × 10¹⁵ N
(a) Density of neutron star:
Given,Mass of neutron star = 3.00 × 10³⁰ kg
Radius of neutron star = 1.20 × 10³ m
Density = Mass / Volume
Volume of neutron star = (4/3)πr³
Volume of neutron star = (4/3) × π × (1.20 × 10³)³m³
Volume of neutron star = 9.16 × 10⁹ m³
Density of neutron star = 3.00 × 10³⁰ / 9.16 × 10⁹
Density of neutron star = 3.27 × 10¹⁷ kg/m³
(b) Weight of 1.0 cm³ neutron star at Earth's surface:
We can calculate the weight using the formula;
W = mg
where, W = weight, m = mass, g = acceleration due to gravity at earth's surface
g = 9.8 m/s²
Let's convert the density into g/cm³1 kg/m³ = 10⁻⁶ g/cm³
Density = 3.27 × 10¹⁷ kg/m³
Density = 3.27 × 10¹¹ g/cm³
Mass of 1.0 cm³ neutron star = density × volume
Mass of 1.0 cm³ neutron star = 3.27 × 10¹¹ g/cm³ × 1.0 cm³
Mass of 1.0 cm³ neutron star = 3.27 × 10¹¹ g
Weight of 1.0 cm³ neutron star = mass × acceleration due to gravity
Weight of 1.0 cm³ neutron star = 3.27 × 10¹¹ g × 9.8 m/s²
Weight of 1.0 cm³ neutron star = 3.21 × 10¹² N
Weight of 1.0 cm³ neutron star = 3.21 × 10¹⁵ nN
The weight of a 1.0 cm³ neutron star at Earth's surface is 3.21 × 10¹⁵ N. Therefore, the answer is (a) Density of neutron star = 3.27 × 10¹⁷ kg/m³(b) Weight of 1.0 cm³ neutron star at Earth's surface = 3.21 × 10¹⁵ N.
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A 0.59−kg particle has a speed of 5.0 m/s at point A and kinetic energy of 7.6 J at point B. (a) What is its kinetic energy at A ? J (b) What is its speed at point B ? m/s (c) What is the total work done on the particle as it moves from A to B ? J 0.18−kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.4 m. (a) Taking y=0 at the top edge of the well, what is the gravitational potential energy of the stone-Earth system before the stone is released? ] (b) Taking y=0 at the top edge of the well, what is the gravitational potential energy of the stone-Earth system when it reaches the bottom of the well? J (c) What is the change in gravitational potential energy of the system from release to reaching the bottom of the well?
The kinetic energy at point A is 7.375 J, the speed at point B is approximately 5.62 m/s, and the total work done on the particle as it moves from point A to point B is 0.225 J.
(a) To determine the kinetic energy at point A, we can use the formula for kinetic energy:
[tex]KE = (1/2) * m * v^2[/tex]
Where KE is the kinetic energy, m is the mass of the particle, and v is the velocity. Plugging in the given values, we have
[tex]KE = (1/2) * 0.59 kg * (5.0 m/s)^2 = 7.375 J.[/tex]
(b) To find the speed at point B, we need to use the formula for kinetic energy:
[tex]KE = (1/2) * m * v^2[/tex].
Rearranging the formula, we have
[tex]v = sqrt((2 * KE) / m)[/tex].
Plugging in the given values, we have
[tex]v = sqrt((2 * 7.6 J) / 0.59 kg) ≈ 5.62 m/s[/tex].
(c) The total work done on the particle as it moves from point A to point B can be calculated using the work-energy theorem. The work done is equal to the change in kinetic energy.
The change in kinetic energy is
[tex]ΔKE = KE_B - KE_A = 7.6 J - 7.375 J = 0.225 J[/tex].
The gravitational potential energy of the stone-Earth system before the stone is released is approximately 2.1168 J, the gravitational potential energy of the stone-Earth system when the stone reaches the bottom of the well is approximately 9.9712 J and , the change in gravitational potential energy of the system from release to reaching the bottom of the well is approximately 7.8544 J.
(a) The gravitational potential energy of the stone-Earth system before the stone is released can be calculated using the formula
[tex]PE = m * g * h[/tex],
Where PE is the gravitational potential energy, m is the mass of the stone, g is the acceleration due to gravity, and h is the height.
Plugging in the given values, we have
[tex]PE = 0.18 kg * 9.8 m/s^2 * 1.2 m = 2.1168 J.[/tex]
(b) The gravitational potential energy of the stone-Earth system when the stone reaches the bottom of the well can be calculated in the same way. The height is the depth of the well (5.4 m). Using the formula
[tex]PE = m * g * h,[/tex] we have
[tex]PE = 0.18 kg * 9.8 m/s^2 * 5.4 m = 9.9712 J[/tex].
(c) The change in gravitational potential energy of the system from release to reaching the bottom of the well can be found by subtracting the initial potential energy from the final potential energy.
[tex]ΔPE = PE_final - PE_initial = 9.9712 J - 2.1168 J = 7.8544 J.[/tex]
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A 7.46 kg block is placed at the top of a frictionless inclined plane angled at 31.4 degrees relative to the horizontal. When released (from rest), the block slides down the full 6.37 meter length of the incline. Calculate the acceleration of the block as it slides down the incline.
The acceleration of the block, as it slides down the frictionless inclined plane, is approximately 5.15 m/s².
This is determined by the effect of gravity on the object as it descends the slope, adjusted for the incline angle. To calculate the acceleration of the block, we need to consider the component of gravity that acts along the direction of the incline. Gravity causes the block to accelerate down the incline. The component of gravity along the incline is given by g*sin(θ), where g is the acceleration due to gravity (9.81 m/s²), and θ is the incline angle (31.4 degrees). Plugging in these values, we find that the acceleration of the block down the incline is approximately 5.15 m/s². It's important to note that this calculation assumes the incline is frictionless, which allows the full component of gravity to accelerate the block.
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The histogram below shows information about the
daily energy output of a solar panel for a number of
days.
Calculate an estimate for the mean daily energy
output.
If your answer is a decimal, give it to 1 d.p.
Frequency density
5↑
t
W
2
1
1 2
3
4
5
6
Energy output (kWh)
7 8
a
How much is vo(t) in the following circuit? vs(t) 5cos(100t) other 4 5 cos(100t) -20 cos(100t) 20 cos(100t) R1 192 •4vs(t) R2 vo(t) 192 1
The expression for v₀(t) (voltage) in the following circuit is v₀(t) = (20cos(100t)) / 1
How to determine voltage?To determine the value of v₀(t) in the given circuit, apply Kirchhoff's voltage law (KVL) and Ohm's law.
Kirchhoff's voltage law states that the sum of the voltage drops around a closed loop in a circuit is equal to the sum of the voltage sources in that loop. In this case, write the following equation using KVL:
-4vs(t) + R1 × (4vs(t) - v₀(t)) + R2 × v₀(t) = 0
Now, substitute the given values:
-4(5cos(100t)) + 192 × (4(5cos(100t)) - v₀(t)) + 1 × v₀(t) = 0
Simplifying the equation further:
-20cos(100t) + 192(20cos(100t) - v₀(t)) + v₀(t) = 0
Expanding and rearranging terms:
-20cos(100t) + 3840cos(100t) - 192v₀(t) + v₀(t) = 0
Combining like terms:
3820cos(100t) - 191v₀(t) = 0
Now, isolate v₀(t) by moving the terms around:
191v₀(t) = 3820cos(100t)
Dividing both sides by 191:
v₀(t) = (3820cos(100t)) / 191
Therefore, the expression for v₀(t) in the circuit is:
v₀(t) = (20cos(100t)) / 1
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(a) What is the maximum current in a 2.30-uF capacitor when it is connected across a North American electrical outlet having AV. rms = 120 V and f = 60.0 Hz? mA (b) What is the maximum current in a 2.30-uF capacitor when it is connected across a European electrical outlet having AV rms = 240 V and f = 50.0 Hz?
a. The maximum current in a 2.30-uF capacitor connected across a North American electrical outlet with AV.rms of 120 V and f = 60.0 Hz is approximately 1.01 mA.
b. The maximum current in a 2.30-uF capacitor connected across a European electrical outlet with AV.rms of 240 V and f = 50.0 Hz is approximately 2.54 mA.
The maximum current in a capacitor can be calculated using the formula I = C * ΔV * ω, where I represents the current, C represents the capacitance, ΔV represents the voltage across the capacitor, and ω represents the angular frequency. In this case, the capacitance is given as 2.30 uF (microfarads), and the voltage across the capacitor is 120 V. Since the electrical outlet in North America has a frequency of 60.0 Hz, ω can be calculated as 2π * f. Substituting these values into the formula, we find that the maximum current is approximately 1.01 mA.
Similarly, for the European electrical outlet with AV.rms of 240 V and f = 50.0 Hz, we can use the same formula to calculate the maximum current. The capacitance remains the same (2.30 uF), and the voltage across the capacitor is now 240 V. The angular frequency ω is calculated as 2π * f. Substituting these values into the formula, we find that the maximum current is approximately 2.54 mA.
In summary, the maximum current in a capacitor depends on the capacitance, voltage, and frequency of the electrical source. The higher the voltage and frequency, the higher the maximum current. The provided values for the North American and European outlets yield different maximum currents due to the variation in their AV.rms voltage levels and frequencies.
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Luis is nearsighted. To correct his vision, he wears a diverging eyeglass lens with a focal length of -0.50 m. When wearing glasses, Luis looks not at an object but at the virtual image of the object because that is the point from which diverging rays enter his eye. Suppose Luis, while wearing his glasses, looks at a vertical 10-cm-tall pencil that is 2.0 m in front of his glasses. Part A How far from his glasses is the image of the pencil? Express your answer with the appropriate units. s'] = 0.40 m Previous Answers ✓ Correct Luis is nearsighted. To correct his vision, he wears a diverging eyeglass lens with a focal length of -0.50 m. When wearing glasses, Luis looks not at an object but at the virtual image of the object because that is the point from which diverging rays enter his eye. Suppose Luis, while wearing his glasses, looks at a vertical 10-cm-tall pencil that is 2.0 m in front of his glasses. Y Part B What is the height of the image? Express your answer with the appropriate units. h' = 2.0 cm Previous Answers ✓ Correct Luis is nearsighted. To correct his vision, he wears a diverging eyeglass lens with a focal length of -0.50 m. When wearing glasses, Luis looks not at an object but at the virtual image of the object because that is the point from which diverging rays enter his eye. Suppose Luis, while wearing his glasses, looks at a vertical 10-cm-tall pencil that is 2.0 m in front of his glasses. Heview Constants Your answer to part b might seem to suggest that Luis sees everything as being very tiny. However, the apparent size of an object (or a virtual image) is determined not by its height but by the angle it spans. In the absence of other visual cues, a nearby short object is perceived as being the same size as a distant tall object if they span the same angle at your eye. From the position of the lens, what angle is spanned by the actual pencil 2.0 m away that Luis sees without his glasses? And what angle is spanned by the virtual image of the pencil that he sees when wearing his glasses? Express your answers in degrees and separated by a comma.
Part AThe object distance is u = -2.0 m, the focal length is f = -0.50 m and we are looking for the image distance which is given by the lens formula, 1/f = 1/v - 1/u1/-0.5=1/v-1/-2v=0.4 mTherefore, the image distance is 0.4 m.Part BThe magnification is given by the relation, m = -v/uUsing the values of v and u calculated above, we getm = -0.4/-2 = 0.2The magnification is positive which means that the image is erect and virtual.
The height of the object is h = 10 cm and we are looking for the height of the image, which is given byh' = mh = 0.2 × 10 = 2.0 cmThe height of the image is 2.0 cm.Angle CalculationThe angle spanned by an object at the eye depends on both the size and the distance of the object from the eye. The angle θ can be calculated using the relation,θ = 2tan⁻¹(h/2d)where h is the height of the object and d is its distance from the eye.1. For the object without glasses:
The object is 2.0 m away from the lens and has a height of 10 cm.θ1 = 2tan⁻¹(0.1/4) = 2.86 degrees2. For the image with glasses: The image is virtual and appears 0.4 m behind the lens.
The height of the image is 2.0 cm.θ2 = 2tan⁻¹(0.02/0.4) = 2.86 degreesTherefore, the angles spanned by the object and the image are the same and equal to 2.86 degrees.
M 5. [-/2 Points] DETAILS SERCP11 22.4.P.032. The prism in the figure below is made of glass with an index of refraction of 1.58 for blue light and 1.56 for red light. Find 8g. the angle of de white light is incident on the prism at an angle of 30.0°. (Enter your answers in degrees.) HINT 30.0 188 White light COOL BB MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER ght and 1.56 for red light. Find &, the angle of deviation for red light, and 8. the angle of deviation for blue light, if 4 u Below is made of glass with an index of refraction of 1.58 for blue light and 1.56 for red light. Find & the angle of deviation for red light, and the angle of deviatio white light is incident on the prism at an angle of 30.0°. (Enter your answers in degrees) HINT 30.0 White light Ba 60.0 (a) & the angle of deviation for red light (b), the angle of deviation for blue light Need Help? Raad
Answer: the angle of deviation for red light is 42.16° and for blue light is 40.51°.
The index of refraction of glass for red light is 1.56 and for blue light is 1.58. The angle of incidence of white light is 30 degrees. The formula for the angle of deviation is d = (i + r) - A
where i is the angle of incidence, r is the angle of refraction, and A is the angle of the prism.
The formula for the angle of refraction is given as n = sin(i)/sin(r)
where n is the refractive index of the medium (glass) for the given light.
(a) Angle of deviation for red light: For red light, the refractive index is 1.56.
n = sin(i)/sin(r)1.56
= sin(30)/sin(r)sin(r)
= sin(30)/1.56sin(r)
= 0.3402r
= sin-1(0.3402)r
= 20.16° Using the formula for the angle of deviation, we have:
d = (i + r) - A
= (30 + 20.16) - A
= 50.16 - A.
Therefore, the angle of deviation for red light is A = 50.16 - 8A = 42.16°
(b) Angle of deviation for blue light : For blue light, the refractive index is 1.58.
n = sin(i)/sin(r)1.58
= sin(30)/sin(r)sin(r)
= sin(30)/1.58sin(r)
= 0.318r
= sin-1(0.318)r
= 18.51° Using the formula for the angle of deviation, we have:
d = (i + r) - A
= (30 + 18.51) - A
= 48.51 - A.
Therefore, the angle of deviation for blue light is A = 48.51 - dA = 40.51°
Hence, the angle of deviation for red light is 42.16° and for blue light is 40.51°.
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A close inspection of an electric circuit reveals that a 480.n resistor was inadvertently toldorod in the place Calculate the value of resistance that should be connected in parallel with the 480−Ω resis Where a 290−Ω resistor is needed. Express your answer to two significant figures and include the appropriate units.
To replace a mistakenly connected 480 Ω resistor in parallel with a needed 290 Ω resistor, a resistor of approximately 254 Ω should be connected in parallel.
To find the value of the resistance that should be connected in parallel with the 480 Ω resistor, we can use the formula for the equivalent resistance of resistors connected in parallel:
1/Req = 1/R1 + 1/R2
where Req is the equivalent resistance and R1, R2 are the individual resistances.
Given that the needed resistance is 290 Ω, we can substitute the values into the formula:
1/Req = 1/480 + 1/290
To find Req, we take the reciprocal of both sides:
Req = 1 / (1/480 + 1/290) ≈ 253.92 Ω
Rounding to two significant figures, the value of the resistance that should be connected in parallel is approximately 254 Ω.Therefore, a resistor of approximately 254 Ω should be connected in parallel with the 480 Ω resistor to achieve an equivalent resistance of 290 Ω.
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In the figure a "semi-infinite" nonconducting rod (that is, infinite in one direction only) has uniform linear charge density λ=1.70μC/m. Find (including sign) (a) the component of electric field parallel to the rod and (b) the component perpendicular to the rod at point P(R=32.4 m)
Therefore, the component of the electric field perpendicular to the rod at point P is 1.92 × 10⁴ N/C.
A nonconducting rod that is semi-infinite and has uniform linear charge density λ = 1.70 μC/m is shown in the given figure. The electric field components parallel and perpendicular to the rod at point P (R = 32.4 m) need to be found.(a) Component of Electric Field Parallel to the Rod:If the electric field is measured along a line parallel to the rod at point P, it will be directed radially inward towards the rod. At point P, the electric field is given by:
E = λ / (2πεoR)
where R is the distance from the center of the rod to point P, and εo is the permittivity of free space. By plugging in the given values, we get:
E = (1.70 × 10⁻⁶ C/m) / (2π(8.85 × 10⁻¹² F/m) (32.4 m))
E = - 6.35 × 10⁴ N/C
Therefore, the component of the electric field parallel to the rod at point P is - 6.35 × 10⁴ N/C, where the negative sign indicates that the field is directed radially inward.(b) Component of Electric Field Perpendicular to the Rod:If the electric field is measured along a line perpendicular to the rod at point P, it will be directed in a direction perpendicular to the rod. At point P, the electric field is given by:
E = λ / (2πεoR) sin θ
where R is the distance from the center of the rod to point P, θ is the angle between the perpendicular line and the rod, and εo is the permittivity of free space. Since θ = 90°, the sine of θ is equal to 1. By plugging in the given values, we get:
E = (1.70 × 10⁻⁶ C/m) / (2π(8.85 × 10⁻¹² F/m) (32.4 m)) sin 90°
E = 1.92 × 10⁴ N/C
Therefore, the component of the electric field perpendicular to the rod at point P is 1.92 × 10⁴ N/C.
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Find the uncertainty in the moment of interia. Moment of interia of a disk depends on mass and radius according to this function l(m,r) = 1/2 m r². Your measured mass and radius have the following uncertainties δm = 2.46 kg and δr = 1.82 m. What is is the uncertainty in moment of interia, δ1, if the measured mass, m = 13.68 kg and the measured radius, r = 8.61 m ? Units are not needed in your answer.
The uncertainty in moment of inertia, δ1 is 443.2345 m⁴.
Measured mass, m = 13.68 kg
Measured radius, r = 8.61 m
Uncertainty in the mass, δm = 2.46 kg
Uncertainty in the radius, δr = 1.82 m
The uncertainty in moment of inertia, δ1
Formula:
The moment of interia of a disk depends on mass and radius according to this function
l(m,r) = 1/2 m r².
The uncertainty in moment of inertia is given by,
δ1 = [(∂l/∂m) δm]² + [(∂l/∂r) δr]²
Where,
∂l/∂m = r²/2
∂l/∂r = mr
We have,
∂l/∂m = r²/2= (8.61 m)²/2= 37.03605 m²/2
∂l/∂m = 18.51802 m²
We have,
∂l/∂r = mr= 13.68 kg × 8.61
m= 117.7008 kg.m
∂l/∂r = 117.7008 kg.m
δ1 = [(∂l/∂m) δm]² + [(∂l/∂r) δr]²= [(18.51802 m²) (2.46 kg)]² + [(117.7008 kg.m) (1.82 m)]²= 148686.4729 m⁴ + 48120.04067 m⁴
δ1 = √(148686.4729 m⁴ + 48120.04067 m⁴)= √196806.5135 m⁴= 443.2345 m⁴
The uncertainty in moment of inertia, δ1 is 443.2345 m⁴.
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09) Write the normal force acting on the skier if the friction is neglected. Skier mass=m gravity
The Normal force acting on the skier if the friction is neglected is mg.
The normal force acting on the skier if the friction is neglected is equal to the weight of the skier which is mg, where m is the mass of the skier and g is the acceleration due to gravity. This is because according to Newton's laws of motion, an object at rest or in uniform motion in a straight line will remain in that state of motion unless acted upon by a net force.
Since there is no net force acting on the skier in the vertical direction, the normal force is equal to the weight of the skier.Steps to find the normal force:
Step 1: Write down the given information. Skier mass = m Gravity = g.
Step 2: Determine the weight of the skier Weight = mg.
Step 3: The normal force is equal to the weight of the skier. Normal force = weight = mg.
Therefore, the normal force acting on the skier if the friction is neglected is mg.
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Sarah and Kasim are now ready to tackle the following problem. A constant horizontal force F of magnitude 0.5 N is applied to m1. If m1 = 1.0 kg and m2 = 0.57 kg, find the magnitude of the acceleration of the system of two blocks.
The magnitude of the acceleration of the system of the two blocks is 0.3185 m/s².
In the given scenario, a constant horizontal force F of magnitude 0.5 N is applied to m1. The magnitude of the acceleration of the system of two blocks needs to be calculated.
Acceleration is the rate of change of velocity of an object with respect to time. It is measured in m/s².
The acceleration of the system of two blocks can be determined as follows:
We know that force (F) is given by:
F = m × a,
where,
m is the mass of the object,
a is the acceleration produced by the force applied.
Let us first find the total mass of the system of two blocks:
Total mass of the system of two blocks,
m = m1 + m2= 1.0 kg + 0.57 kg= 1.57 kg
Now, let's calculate the acceleration of the system using the force formula:
F = m × a
⇒ a = F / m = 0.5 N / 1.57 kg = 0.3185 m/s²
Therefore, the magnitude of the acceleration of the system of two blocks is 0.3185 m/s².
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To hit exactly the target, Nuar shoots an arrow at the velocity of 25 m/s with an angle of 35°relativeto the horizontal level as illustrated in Figure 2 above.i)Find the vertical &horizontal components of the initial velocity of arrow.ii)Find the time of flight of the arrow before it hits the target.]iii)What is the distance between Nuar and the target?
The vertical component of the initial velocity is 25 m/s * sin(35°) ≈ 14.30 m/s, and the horizontal component is 25 m/s * cos(35°) ≈ 20.44 m/s.
i) To find the vertical and horizontal components of the initial velocity, we use trigonometry. The vertical component is given by v_vertical = v_initial * sin(theta), where v_initial is the magnitude of the initial velocity (25 m/s) and theta is the angle of projection (35°). Similarly, the horizontal component is given by v_horizontal = v_initial * cos(theta). Calculating these values, we get v_vertical ≈ 14.30 m/s and v_horizontal ≈ 20.44 m/s.
ii) The time of flight can be determined by considering the vertical motion of the arrow. The arrow follows a projectile motion, and the time it takes to reach its maximum height is equal to the time it takes to fall from its maximum height to the ground. Since these times are equal, the total time of flight is twice the time it takes to reach the maximum height. Using the vertical component of velocity (v_vertical) and the acceleration due to gravity (g ≈ 9.8 m/s²), we can calculate the time of flight as t = (2 * v_vertical) / g ≈ 2.92 seconds.
iii) The distance between Nuar and the target can be determined by considering the horizontal motion of the arrow. The horizontal distance is equal to the horizontal component of velocity (v_horizontal) multiplied by the time of flight (t). Therefore, the distance is given by distance = v_horizontal * t ≈ 20.44 m/s * 2.92 s ≈ 59.73 meters.
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A solenoid is made of N= 3500 turns, has length L = 45 cm, and radius R = 1.1 cm. The magnetic field at the center of the solenoid is measured to be B = 2.7 x 10-¹ T. What is the current through the wires of the solenoid? Write your equation in terms of known quantities. Find the numerical value of the current in milliamps.
The current through the wires of the solenoid is approximately 23.51 mA (milliamperes).
The magnetic field inside a solenoid is given by the equation B = μ₀ * N * I / L, where B is the magnetic field, μ₀ is the permeability of free space (constant), N is the number of turns, I is the current, and L is the length of the solenoid.
To find the current, we can rearrange the equation as I = (B * L) / (μ₀ * N).
Given that N = 3500 turns, L = 45 cm (0.45 m), R = 1.1 cm (0.011 m), and B = 2.7 x 10^(-3) T, we need to calculate the permeability of free space, μ₀.
The permeability of free space, μ₀, is a constant value equal to 4π x 10^(-7) T·m/A.
Substituting the known values into the equation, we can solve for the current I.
After obtaining the value of the current in amperes, we can convert it to milliamperes (mA) by multiplying by 1000.
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To calculate an object's weight, a force probe with a hook may be used. However, what the force probe is really measuring is the tension along the force probe; not the object's weight. Using Newton's 2nd Law, explain why the tension on the force probe and the object's weight have the same magnitude.
The force probe may be used to calculate the weight of an object. However, the force probe is really measuring the tension along the force probe. According to Newton's second law, the tension on the force probe and the object's weight have the same magnitude.
Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This can be expressed as: F = ma Where: F = net force applied to the objectm = mass of the object a = acceleration produced by the force When an object is hung from a force probe, the net force acting on the object is its weight (W), which is equal to the product of its mass (m) and the acceleration due to gravity (g). The formula used is this: W = mg. The acceleration of the object is zero. Therefore, the net force acting on the object is also zero, showing that the force applied by the force probe is equal in magnitude to the weight of the object. Thus, the tension on the force probe and the object's weight has the same magnitude. Thus, we can use the force probe to measure the weight of an object. If the object weighs 150 N, then the tension on the force probe will also be 150 N.
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Which statements describe acceleration? Check all that apply.
1.Negative acceleration occurs when an object slows down in the positive direction.
2.Negative acceleration occurs when an object slows down in the negative direction.
3.Negative acceleration occurs when an object speeds up in the negative direction.
4.Positive acceleration occurs when an object speeds up in the positive direction.
5.Positive acceleration occurs when an object speeds up in the negative direction.
6.Positive acceleration occurs when an object slows down in the negative direction.
Does the magnetising current of a transformer lie in-phase with the applied voltage? Justify. What is the effect of saturation on exciting current of transformer? What are the ill-effects of inrush current of transformer? Even at no-load, a transformer draws current from the mains. Why? What do you mean by exciting resistance and exciting reactance? Usually, transformers are designed to operate in saturated region. Why?
The magnetizing current of a transformer does not lie in-phase with the applied voltage. It lags the applied voltage by a small angle.
What are the realities on transformers?Magnetizing current
No, the magnetizing current of a transformer does not lie in-phase with the applied voltage. It is slightly lagging behind the applied voltage by a small angle. This is because the transformer core has a small amount of resistance, which causes a small voltage drop across the core. This voltage drop is in-phase with the current, and it causes the current to lag behind the voltage by a small angle.
When the transformer core is saturated, the magnetizing current increases sharply. This is because the core becomes increasingly difficult to magnetize as it approaches saturation. The increased magnetizing current causes the transformer to lose efficiency and to produce more heat.
Inrush current
The inrush current of a transformer can cause a number of problems, including:
Overloading the transformer
Tripping the transformer's protective devices
Damaging the transformer's windings
Starting a fire
Even at no-load, a transformer draws a small amount of current from the mains. This current is called the magnetizing current. The magnetizing current is required to create the magnetic field in the transformer core. The magnetic field is necessary to induce the voltage in the secondary winding.
Exciting resistance and exciting reactance
The exciting resistance of a transformer is the resistance of the transformer core. The exciting reactance of a transformer is the reactance of the transformer's windings. The exciting resistance and exciting reactance together form the transformer's impedance.
Transformers are not designed to operate in the saturated region. The saturated region is a region where the core is unable to produce any additional magnetic flux. This can cause a number of problems, including:
Increased magnetizing current
Decreased efficiency
Increased heat generation
Transformers are designed to operate in the linear region, where the core is able to produce a linear relationship between the applied voltage and the induced voltage. This allows the transformer to operate efficiently and to produce the desired amount of power
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Determine the magnetic field at the surface of the wire. Express your answer using two significant figures. A 3.0 mm -diameter copper wire carries a 40 A current (uniform across its cross section). Part A Determine the magnetic field at the surface of the wire.
Express your answer using two significant figures.
Part B Determine the magnetic field inside the wire, 0.50 mm below the surface. Express your answer using two significant figures
Part C Determine the magnetic field outside the wire 2.5 mm from the surface. Express your answer using two significant figures.
a) The magnetic field at the surface of the wire is approximately 0.05 T.
b) The magnetic field inside the wire, 0.50 mm below the surface, is approximately 0.033 T.
c) The magnetic field outside the wire, 2.5 mm from the surface, is approximately 4.2 × 10⁻⁵ T.
Part A:
To determine the magnetic field at the surface of the wire, we can use Ampere's law.
Ampere's law states that the magnetic field around a closed loop is directly proportional to the current passing through the loop. For a long straight wire, the magnetic field forms concentric circles around the wire.
At the surface of the wire, the magnetic field can be calculated using the formula B = μ₀I/2πr,
B = (4π × 10⁻⁷ T·m/A × 40 A) / (2π × 0.0015 m) ≈ 0.05 T
Part B:
Inside the wire, the magnetic field follows a different formula. For a long straight wire, the magnetic field inside can be calculated using the formula B = μ₀I/2πR:
B = (4π × 10⁻⁷ T·m/A × 40 A) / (2π × 0.001 m) ≈ 0.033 T
Part C:
Outside the wire, at a distance r from the surface, the magnetic field can be calculated using the formula B = μ₀I/2πr.
B = (4π × 10⁻⁷ T·m/A × 40 A) / (2π × 0.0025 m) ≈ 4.2 × 10⁻⁵ T
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If an object is launched straight upward with an initial velocity of 25 m/s, can it ever reach a
height of 35 m? Its mass is not important (we neglect air resistance), if you want you can assume m= 1.0 kg.
A. Yes, it will get to exactly that height
B. No, it will reach a maximum height of 34 m
C. No. this violates the conservation of energy law
D. Yes, it will reach a height of 42 m
2) After performing a trick above the rim of a
skateboard ramp, a 56 kg skateboarder lands on the ramp 3.5 m above ground level with a
downward velocity of 4.0 m/s.
Friction in the wheels of the skateboard and air resistance causes a loss of 9.0x10' J of
mechanical energy.
The skateboarder's speed at the bottom of the ramp will be
A. 6.0 m/s
B. 7.2 m/s
C. 9.2 m/s
D. 11 m/s
3) An express elevator has an average speed
of 9.1 m/s as it rises from the ground floor
to the 100th floor, which is 402 m above the
ground. Assuming the elevator has a total
mass of 1.1 x10' kg, the power supplied by
the lifting motor is a.bx10^c W (in scientific
notation).
1. Yes, it will get to exactly that height. So, the correct option is A. 2. The skateboarder's speed at the bottom of the ramp will be D. 11 m/s 3. The power supplied by the lifting motor is approximately 9.77 x 10^5 W (in scientific notation).
1. To determine if the object can reach a height of 35 m, we can analyze the motion using the laws of physics.
When an object is launched straight upward, its initial velocity is positive (+25 m/s) and it experiences a constant acceleration due to gravity in the opposite direction (negative).
Using the kinematic equation for displacement in vertical motion:
Δy = v₀t + (1/2)gt²
where Δy is the change in height, v₀ is the initial velocity, t is the time, and g is the acceleration due to gravity.
For the object to reach a height of 35 m, we set Δy = 35 m. We can rearrange the equation to solve for t:
35 = 25t - (1/2)(9.8)t²
0.5(9.8)t² - 25t + 35 = 0
Solving this quadratic equation, we find two possible solutions for t: t ≈ 4.37 s and t ≈ 0.63 s.
Since time cannot be negative, the object can reach a height of 35 m twice: once on the way up and once on the way down. Therefore, the correct answer is:
A. Yes, it will get to exactly that height
2.To determine the skateboarder's speed at the bottom of the ramp, we can use the principle of conservation of mechanical energy. Initially, the skateboarder has gravitational potential energy and no kinetic energy. At the bottom of the ramp, the gravitational potential energy is zero, and the skateboarder will have only kinetic energy.
The initial mechanical energy is the sum of gravitational potential energy (mgh) and the initial kinetic energy (1/2mv^2):
Initial energy = mgh + (1/2)mv₀^2
The final mechanical energy is the final kinetic energy (1/2)mv^2:
Final energy = (1/2)mv^2
According to the conservation of mechanical energy, the initial energy should be equal to the final energy, taking into account the loss of energy due to friction and air resistance:
Initial energy - Energy loss = Final energy
mgh + (1/2)mv₀^2 - Energy loss = (1/2)mv^2
Plugging in the given values:
m = 56 kg
h = 3.5 m
v₀ = -4.0 m/s (negative because it is downward)
Energy loss = 9.0x10^3 J
Substituting these values into the equation:
56 * 9.8 * 3.5 + (1/2) * 56 * (-4.0)^2 - 9.0x10^3 = (1/2) * 56 * v^2
Simplifying the equation:
617.4 - 448 - 9.0x10^3 = 28v^2
Solving for v:
-8.6x10^3 = 28v^2
v^2 = (-8.6x10^3) / 28
v ≈ -11.0 m/s (negative because it is downward)
The skateboarder's speed at the bottom of the ramp is approximately 11 m/s downward.
Therefore, the correct answer is: D. 11 m/s
3. To calculate the power supplied by the lifting motor, we'll use the following steps:
Calculate the work done by the elevator:
Work = Force * Distance
The force acting on the elevator is equal to its weight:
Force = Mass * Acceleration
The acceleration of the elevator is zero since it moves at a constant speed, so the force is:
Force = Mass * Gravity
The distance the elevator travels is given as 402 m.
Work = (Mass * Gravity) * Distance
Plugging in the values:
Work = (1.1 x 10^5 kg) * (9.8 m/s^2) * (402 m)
= 4.31 x 10^7 J
Calculate the time taken by the elevator:
Time = Distance / Speed
Plugging in the values:
Time = 402 m / 9.1 m/s
= 44.18 s
Calculate the power supplied by the lifting motor:
Power = Work / Time
Plugging in the values:
Power = (4.31 x 10^7 J) / (44.18 s)
= 9.77 x 10^5 W
Therefore, the power supplied by the lifting motor is approximately 9.77 x 10^5 W (in scientific notation).
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Test your understanding and self-check Open the full Bending Light simulation 6. Show that you can use Snell's Law (nisin1 = n2sin 2) to predict the angle of reflection and angle of refraction for several scenarios. Show your work. After you have completed the calculations, use simulation to check your work For incident angle of 30 degrees light shining a. from air into water b. from water into air c. from air into glass d. from water into glass e. from air into a medium with an index of 1.22
The task is to use Snell's Law to predict the angle of reflection and angle of refraction for different scenarios involving light passing through different media.
The scenarios include light traveling from air to water, water to air, air to glass, water to glass, and air to a medium with an index of 1.22. The calculations will be done based on Snell's Law, and the results will be verified using the Bending Light simulation.
Snell's Law relates the angles of incidence and refraction to the refractive indices of two media. The equation is given by n₁sinθ₁ = n₂sinθ₂, where n₁ and n₂ are the refractive indices of the initial and final media, and θ₁ and θ₂ are the angles of incidence and refraction, respectively.
To predict the angles of reflection and refraction for the given scenarios, we need to know the refractive indices of the media involved. We can then apply Snell's Law and calculate the corresponding angles using the given incident angle.
Once the calculations are completed using Snell's Law, the Bending Light simulation can be used to verify the results. The simulation allows us to visually observe the behavior of light rays as they pass through different media, confirming whether our predicted angles of reflection and refraction are accurate.
By comparing the calculated values with the simulated results, we can determine the accuracy of our predictions and verify the applicability of Snell's Law in different scenarios.
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A 0.199 kg particle with an initial velocity of 2.72 m/s is accelerated by a constant force of 5.86 N over a distance of 0.227 m. Use the concept of energy to determine the final velocity of the particle. (It is useful to double-check your answer by also solving the problem using Newton's Laws and the kinematic equations.) Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 146, 5.23e-8 Enter answer here m/s
By using the concept of energy, the final velocity of the particle is obtained approximately as 4.548 m/s.
To determine the final velocity of the particle using the concept of energy, we can apply the work-energy principle.
The work done on an object is equal to the change in its kinetic energy.
The work done on the particle is given by the formula:
Work = Force * Distance * cos(θ)
In this case, the force is 5.86 N and the distance is 0.227 m.
Since the angle θ is not provided, we will assume that the force is applied in the direction of motion, so cos(θ) = 1.
Work = 5.86 N * 0.227 m * 1 = 1.33162 N·m
The work done on the particle is equal to the change in its kinetic energy.
The initial kinetic energy is given by:
Initial Kinetic Energy = (1/2) * mass * initial velocity^2
Initial Kinetic Energy = (1/2) * 0.199 kg * (2.72 m/s)^2
Initial Kinetic Energy = 0.7319296 J
The final kinetic energy is given by:
Final Kinetic Energy = Initial Kinetic Energy + Work
Final Kinetic Energy = 0.7319296 J + 1.33162 N·m
Final Kinetic Energy = 2.0635496 J
Finally, we can determine the final velocity using the equation:
Final Kinetic Energy = (1/2) * mass * final velocity^2
2.0635496 J = (1/2) * 0.199 kg * final velocity^2
[tex](final \,velocity)^2[/tex] = 2.0635496 J / (0.199 kg * (1/2))
[tex](final \,velocity)^2[/tex] = 20.718592 J/kg
final velocity = [tex]\sqrt{20.718592 J/kg}[/tex] = 4.548 m/s
Therefore, the final velocity of the particle is approximately 4.548 m/s.
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A kind of variable is the charge of an electron? Quantixed variable Continuous variable Both continuous and quantized wher continuous nor quantized Question 2 Which of the following is a continuous variable? Gas mileage of a car Number of cars a family owns Car's age (in years) Number of passengers a car holds.
The answer to the question is: Quantized variable.
Electrons carry a fundamental unit of negative electric charge. The charge carried by an electron is quantized, which means that it only comes in specific amounts. Electrons are not continuous and can exist only as whole units of charge.
The answer to the question is: Gas mileage of a car.
A continuous variable is a variable that can have any value between two points. For instance, weight or height can take on any value between a minimum and a maximum. Gas mileage is a variable that can take on any value between a minimum and a maximum as well. The number of cars a family owns, car's age, and number of passengers a car holds are discrete variables, as they can only take on whole number values.
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