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Relative Velocity

The power of ...

Question

The power of a pump, which can pump $500 k g$ of water height $100 m$ in $10 s$ is:

75 k W

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25 k W

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50 k W

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500 k W

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Solution

The correct option is C $50 k W$
power= $\frac{m g h}{t} = \frac{500 \times 10 \times 100}{10} = 50000 W = 50 k W$

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