Question on: SS1 Physics - Work, Energy, And Power
A water pump lifts 2000 litres of water to a height of 10 meters in 5 minutes. What is the power output of the pump?
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Convert litres to cubic meters:
Volume = 2000 litres = 2000/1000 cubic meters = 2 cubic meters
Convert minutes to seconds:
Time = 5 minutes = 5 x 60 seconds = 300 seconds
Power = (Work / Time) = (Force x Distance / Time)
Power = (mass x gravity x height) / time
Power = (2 cubic meters x 1000 kg/cubic meter x 9.8 m/s2 x 10 meters) / 300 seconds
Power = 653.33 Watts
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