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A student (m=63 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.0190 s. The average force exerted on him by the ground is +20,000. N, where the upward direction is taken to be the positive direction. From what height did the student fall? Assume that the only force acting on him during the collision is that due to the ground.
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A 1.80-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 6.00sin(2?t), Find the resonance angular frequency of the system
A 1.0kg object is released from rest 500km ( approx 300 miles) above the earth. What would the impact speed be if the earth were flat
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 9.00×10?3m/s2 less than that at sea level
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. Find the total sound intensity that the man hears when he is at his initial position halfway between the speakers
A bowling ball is rolled off a flat top building w/ an initial speed of 5.8m/s. It lands 24.2 meters from base of the building. how tall is the building
a 70 kg object is being pulled up a slope of 35 degrees with the horizontal so that the rope is parallel to the slope.
Suppose that 1.4 moles of an ideal diatomic gas has a temperature of 1273 K, and that each molecule has a mass 2.32 × 10-26 kg, How many degrees of freedom does each molecule of the gas have
A plastic circular loop has a radius R, and a positive charge q is distributed uniformly around the circumference of the loop. what is the magnitude of the magnetic torque on the loop
During an earthquake, a house plant of mass 10.0 in a tall building oscillates with a horizontal amplitude of 12.0 at 0.30. What is the magnitude of the maximum velocity of the plant
An advertisement for a certain portable vacuum cleaner shows off its power with a photograph of the vacuum-cleaner wand suspending a bowling ball by the strength of its suction. find the weight of the heaviest ball the vacuum cleaner can lift
A halfback is initially running south at a speed of 9.90 m/s, quickly cuts to his right, and 0.505 s later is running 60.0° west of south at 9.10 m/s
A 0.050-kg lump of clay moving horizontally at 12 m/s strikes and sticks to a 0.15-kg cart that can move on a frictionless air track. Determine the speed of the cart and clay
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