What average force was exerted on the ball
After falling from rest from a height of 29 m, a 0.47 kg ball rebounds upward, reaching a height of 19 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on the ball?
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A 5.80 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.63 T pointing up. During the course of 0.15 s, the field is changed to one of 0.25 T pointing down. What is the average induced emf in t
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