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Experience shows that from one third to one half of the passengers in an airliner can be expected to suffer motion sickness if the airliner bounces up and down with a peak acceleration of 0.40g and a frequency of ~0.30 Hz. Assume that this up-and-down motion is simple harmonic. What is the amplitude of the motion?
Two people carry a heavy electric motor by placing it on a light board 2.30m long. One person lifts at one end with a force of 420N , find Where is its center of gravity located
A 71kg pole-vaulter falls from rest from a height of 4.6m onto a foam-rubber pad. The pole-vaulter comes to rest 0.4s after landing on the pad.
question1a two kilogram block is dropped from a height of 0.45m above an incompressible spring. the spring has an
a man sitting in a bosun's chair that dangles from a massless rope, which runs over a massless frictionless pulley, In each of the four cases, what is the force exerted on the ceiling by the pulley system
A 2.5 kg block of wood sits on a table. A 3.0 g bullet, fired horizontally at a speed of 540 m/s , obtain the speed of the block immediately after the bullet exits
Three infinite nonconducting sheets, with uniform positive surface charge densities, sigma, 2sigma, and 3sigma, are arranged to be parallel. What is their order, from left to right
Prepare a multiple-step income statement for the year ended December 31, 2012, concluding with earnings per share.
A baseball player friend of yours wants to determine his pitching speed. You have him stand on a ledge and throw the ball horizontally from an elevation 3.0m above the ground, What is his pitching speed
A helicopter is ascending vertically with a speed of 5.03m/s. How much time does it take for the package to reach the ground
500 kg satellite moves in a circular orbit of 4.8 x 106 m above the surface of the earth. What is the orbital speed of the satellite
question1a loudspeaker of mass 22.0 kg is suspended a distance of h 2.20 m below ceiling by two cables that make equal
A crane drops a 1.0 kg steel ball onto a steel plate. The balls speed just before impact is 2.0m/s. what is the bounce back speed right after the impact
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