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Question

A pump raises water by spending 4×105 J of energy in 10 s. Find the power of pump.


Solution

Energy spent = w = 4 × 105 J Time
taken = 10 s
Power = Energy / Time
P equals fraction numerator 4 cross times 10 to the power of 5 over denominator 10 end fraction equals 4 cross times 10 to the power of 4 W

Physics
Concise Physics
Standard VIII

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