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Gravel is dropped on to a conveyor belt at the rate of 0.5 kg/s.The extra force required to keep the belt moving at 2 /s is a)1 N b)2 N c)4 N d)5 N e)10 N Please explain the question and answer in detail clearly ...
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When one swims across a flowing river,maximum energy is spent in a)first 1/3rd of distance b)second 1/3rd of distance c)last 1/3rd of distance d)equal energy is spent throughout ...
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A particle is projected from a horizontal plane(x-z plane) such that its velocity vector at time t is given by V=ai+(b-ct)j . Its range on horizontal plane is a) ba/c b)2ba/c c)3ba/c d)None ...
