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Starting from rest, two skaters "push off" against each other on smooth level ice, where friction is negligible. One is a man and one is a woman. The woman moves away with a velocity of +2.3 meter per second relative to the ice. The mass of the woman is 55 kilogram and the mass of the man is 76 kilogram. Assuming that the speed of light is 3.3 meter per second, thus that the relativistic momentum must be used, obtain the recoil velocity of the man relative to ice.
A golf gall is dropped from a height of h1 = 3.45 m. After it bounces it only reaches h2 = 2.23 m. How much energy did the ball transfer to the environment during the bounce in Joules
a u-shaped tube open to the air on both ends contains mercury. water is poured into the left arm until the water column
A sample of neon gas has its volume doubled and its temperature held constant. What will be the new pressure relative to the initial pressure? A quantity of steam ( 800 g) at 115oC is condensed, and the resulting water is frozen into ice at 0oC. How ..
Compute the force exerted on the palm of your hand by the beam of a 1.0W flashlight (a) if your hand absorbs the light and (b) if the light reflects off your hand
A frictionless pendulum clock on the surface of the earth has a period of 1.00 s. On a distant planet, the length of the pendulum should be shortened slightly to have a period of 1.00 s. What is true about the acceleration due to gravity on the dista..
A physicist trying to demonstrate destructive interference stands 2.7m directly in front of a speaker. A second speaker produces identical (coherent) 600Hz tones.
A ring with radius R has a total charge Q uniformly distributed around it. To leading order, find the electric field at a point along the axis of the ring, a very small distance z from the center
A camera takes a perfectly exposed picture when the lens diaphragm is set to f/4 and the shutter speed is 1/250 s, what should the new shutter speed be so that the exposure is still correct
a vibrating structural beam in a spacecraft can cause problems if the frequency of vibration is fairly high. even if
The record for the highest speed achieved in alaboratory for a uniformly rotating object was 2.01*10^3 m/s for a0.15-m long carbon rod. What was the period of rotation of the rod
A series ac circuit contains a 230? resistor, a 13.0mH inductor, a 2.50?F capacitor, and an ac power source of voltage amplitude 45.0Voperating at an angular frequency of 360rad/s. Find the average power delivered to the entire circuit
A mass m1 undergoes circular motion of radius R on a horizontal frictionless table, connected by a mass less string through a hole in the table to a second mass m2. If m2 is stationary. Evaluate the period of the circular motion
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