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A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power needed using 1000 J of work, is
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Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is
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If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?
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