Answer is option(c). But explain the process in detail
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given mass/time =15 (since its unit is kg/s)
and 10% energy is already lost due to frictional forces,so remaining is 90%,hence multiplied by 90%.
Hope you understand....!!!
and 10% energy is already lost due to frictional forces,so remaining is 90%,hence multiplied by 90%.
Hope you understand....!!!
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