An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 1 m/s. The mass per unit length of water in the pipe is 100 kg/ m. What is the power of the engine?
A
100 W
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B
400 W
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C
200 W
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D
800 W
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Solution
The correct option is A100 W mass per unit length of water, μ=100kg/m