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A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +40 N·m is applied to the wheel for 17 s, giving the wheel an angular velocity of +520 rev/min. The external torque is then removed, and the wheel comes to rest 120 s later. (Include the sign in your answers.)
(a) Find the moment of inertia of the wheel.
(b) Find the frictional torque, which is assumed to be constant.
A skier has a speed of 5.0 m/s on top of a hill that is 30.0 m above the valley floor. Determine the speed of the skier while she is in the valley floor
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Suppose that you loft the ball with an initial speed of v = 16.2 m/s, at an angle of ? = 49.4° above the horizontal. With what minimum average speed must he move
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A sinusoidal voltage ?v = (65 V) sin (130t) is applied to a series RLC circuit with L = 10 mH, C = 120 ?F, and R = 50 ?. What is the maximum current in the circuit
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