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A ball having a mass of 170 g strikes a wall with a speed of 5.0 m/s and rebounds with only 50% of its initial kinetic energy.
(a) What is the speed of the ball immediately after rebounding?
____m/s
(b) What is the magnitude of the impulse on the wall from the ball?
____N·s
(c) If the ball was in contact with the wall for 7.4 ms, what was the magnitude of the average force exerted by the wall on the ball during this time interval?
____N
Four identical charges (+2.2 %u03BCC each) are brought from infinity, Determine the electric potential energy of this group
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When he was first thinking about relativity (and before he developed his theory), find the your friend's speed relative to your reference frame
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At NASA's Zero Gravity Research Facility in Cleveland, Ohio, experimental payloads fall freely from rest in an evacuated vertical shaft through a distance of 132 m, How fast will the payload be traveling when it reaches the bottom of the shaft
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