Question on: WAEC Physics - 1989
An engine raises 1000kg of water through a height of 60m in 20s. What is the power of the engine? (Take g = 10ms-2>).
A
120,000 W
B
30,000 W
C
333 W
D
300 W
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Correct Option: B
P = mgh/t = (1000 (\times) 10 (\times) 60) (\div) 20 = 30,000 W.
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