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A 10.0kg stone slides down a snow-covered hill (the figure (Figure 1) ), leaving point A with a speed of 10.0m/s . There is no friction on the hill between points A and B, but there is friction on the level ground at the bottom of the hill, between B and the wall. After entering the rough horizontal region, the stone travels 100 {\rm m} and then runs into a very long, light spring with force constant 2.40N/m . The coefficients of kinetic and static friction between the stone and the horizontal ground are 0.20 and 0.80, respectively.
a) What is the speed of the stone when it reaches point B?
b) How far will the stone compress the spring?
c) Will the stone move again after it has been stopped by the spring?
Suppose the mica is 1.5 thick (and therefore fills the space between the plates).The charges on the plates are equal and opposite and of magnitude 380.
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The cable pulls horizontally on the box, and a 50.30 bag of gravel rests on top of the box. The coefficients of friction between the box and roof are shown. The system is not moving. Find out the friction force on the bag of gravel.
A 0.250 block moving vertically upward collides with a light vertical spring and compresses it 4.00 before coming to rest. If the spring constant is 53.0 , what was the initial speed of the block? (Ignore energy losses to sound and other factors d..
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A point charge q = -2.4 nC is initially at rest adjacent to the negative plate of a capacitor, What is the kinetic energy of the point charge just before it hits the positive plate
Andy and Brad are lifting a 100 kg box to their apartment window using massless ropes. The ropes are tied to the same point on the box, Find the tensions in each rope.
An outfielder throws a 0.150 kg baseball at a speed of 39.6m/s and an initial angle of 34° What is the kinetic energy of the baseball at the highest point of its trajectory.
Illustrate what was its angular acceleration (assumed constant) and what was its final angular speed in rpm?
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