An engine raises 1000kg of water through a height of 60m in 20s. What is the power of the engine? (Take g = 10ms-2>).
The correct answer is B. 30,000 W
P = mgh/t = (1000 \(\times\) 10 \(\times\) 60) \(\div\) 20 = 30,000 W.
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