4 m3 of water is to be pumped to a height of 20m and forced into a reservoir at a pressure of 2 * 105 N/m2. Find the work done by the motor. (External pressure = 105 N/m2)

Dear student,work done=mghmass of water = density×volume=1000×4=4000kgwork done=4000×10×20=800kJRegards

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11.32600kj
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plzz answer
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