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In each of the following situations, Emma is in the exact center of a glass-sided fright car speeding to the right at a very high speed v relative to you. For each question, explain your reasoning.
Emma has a flashlight in each hand and directs them at the front and rear ends of the freight car. She then switches the flashlights on at the same time.
In Emma's frame of reference, which beam of light travels at a greater speed, the one directed toward the front or the one directed toward the rear of the train, or do they travel at the same speed?
In Emma's frame of reference, which end, front or rear, is struck by light first, or are they struck at the same time? Which end is struck first in your frame of reference?
A rotating wheel requires 5.0 second to complete 50 revolutions. Its angular speed at the end of the 5.0 second interval is 75 rad/s. Determine the constant acceleration of the wheel
A particle that is moving in a straight line slows uniformly from 50.0 m/s to 20.0 m/s in 6 second. Determine how far did the particle travel during these 6 seconds
A gas, while expanding under isobaric conditions, does 494 J of work. The pressure of the gas is 1.57E+5 Pa, What is the final volume of the gas
A particle with a charge of 18.2 mC moves along the x-axis with a speed of 49.2 m/s. It enters a magnetic field given with vector B = 0.321 y(hat)+ 0.723 z(hat), in teslas. Decide the magnitude of the magnetic force on the particle.
A target in a shooting gallery consists of a vertical squarewooden board, 0.250 m on a side and with mass 0.750 kg, What is the angular speed of the board just afterthe bullet's impact
A heat pump removes 2000 J ofheat from the outdoors and delivers 3160 J of heat to the inside of a house. How much work does the heat pump need
A small conductive rod of length 1.3 m moves with a constant velocity v=20 m/s in a direction parallel to a long wire carrying a current of 40 A. Calculate the electric potential induced across the rod
But what about the virtual photons of the magnetic field? How are they affected? Surely we cannot see a permanent magnet stuck on the surface of the event horizon.
Two capacitors, one with capacitance C and a second with capacitance C/3 are connected in parallel. What is the energy stored in the second capacitor
Provided that a 6.12x10^-2 A current in the wire is directed downward, what is the magnitude and direction of the magnetic field in the two boxes, if the boxes are 3.7x10^-3 m away from the wire?
A 130 g copper bowl contains 240 g of water, both at 20.0°C. How much energy (in calories) is transferred to the water as heat
A shopper pushes a cart 44- m south down one aisle and then turns 90.0° west and moves 30 m. He then makes another 90° turn and moves 13 m.
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