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A 4.0-kg ball has a momentum of 20.0 kg-m/s. What is the ball's speed?
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If the force applied to an object remains constant, is more power needed for the object to move faster ? explain
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Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
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How much energy is supplied to each coulomb of charge that flows through a 12-v battery?
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What is the gravitational attraction between a dating couple whose centers of mass are 0.630 m apart if the boy weighs 715 n and the girl weighs 465 n?
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A 4.0-kg ball has a momentum of 20.0 kg-m/s. What is the ball's speed?...
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