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A railroad car of mass 2.40 x 104 kilogram moving at 3.50 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s.
(a) Find the speed of the three coupled cars after the collision?
m/s
(b) Find how much kinetic energy is lost in the collision?
J
A 529-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth's mean radius, Find the gravitational force acting on it
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Evaluate (a) the acceleration of each object, (b) the tension in the string, and (c) the coefficient of kinetic friction between m2 and the incline.
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A small metal sphere of mass 6.9 g and charge 5.9 μC is firedwith an initial speed of 4.9 m/s directly toward the center of asecond metal sphere carrying charge 7.2 μC. This second sphereis held fixed.
An 8.70kg block slides with an initial speed of 1.84 m/s down a ramp inclined at an angle of 28.2 with the horizontal. find the distance the block slides before coming to rest
a 30 kg child stands on the edge of a stationary merry-go-round of radius 2.0 m. What is the angular speed of the merry-go-round just after the ball is caught
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A 6-lb block is attached to a cable and to a spring. theconstant of the spring is k=5lb/in and the tension in the cable is4 lb. determine the maximum displacement of the block
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a device is usedin medical laboratories, for instance, to cause the more dense redblood cells to settle through the less dense bloo..
An olympic skier moving at 20.0 m/s down a 30.0 Degrees slope encounters a region of wet snow and slides 145 m before coming to a halt
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