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A student (m = 63 kilogram) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.0170 second. The average force exerted on him by the ground is +15000 N, where the upward direction is taken to be the positive direction. Evaluate from what height did the student fall? Suppose that the only force acting on him during the collision is that due to the ground. m
In the old west, a marshal riding on a train traveling 50 m/s seesa duel between two men standing on the Earth 50 m apart parallel tothe train. How much earlier did he fire
Find out the minimum horizontal velocity magnitude of the acceleration of the blocks
A tuning fork vibrates at a frequency of 530 Hz. An out-of-tune piano string vibrates at 535 Hz. How much time separates successive beats
A person walks into a room that has, on opposite walls, two planemirrors producing multiple images. Find the distances from theperson to the first three images seen in the left-hand mirror, whenthe person is 7.00 ft fromthe mirror on the left wall an..
A 10 resistor, 10 mH inductor, and a 110.0 µF capacitor are connected in series to a 50.0 V (rms) source having variable frequency. Find out the energy delivered to the circuit during one period if the operating frequency is twice the resonance fr..
Two loudspeakers are placed 3.00 m apart, as shown in the figure. They emit 450 Hz sounds, in phase. A microphone is placed d = 3.00 m distant from a point midway among the two speakers, where an intensity maximum is recorded.
a vertical spring ignore its mass whose spring stiffness constant is 820 nm is attached to a table and is compressed
You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the oars) toward you, find the magnitude of the force that you exert on the handle
A hot-air balloon is accelerating upward under the influence of twoforces, its weight and the buoyant force. What is the acceleration of the rising balloon
Sharon has a mass of 60 kg and is standing on a giant skateboard that is initially at rest and has a mass of 30kg. what is the speed of the skateboard
make Use of a 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
A 1.0 mm diameter mall bearing has 2.0 x 10^9 excess electrons. What is the ball bearing's potential
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