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An electric pump is used to pump water t...

An electric pump is used to pump water to fill a water tank of volume `30m^(3)` in 20 minute. The pump is on the ground floor and the tank is one the terrace of the building. The centre of the tank is at 400 m above the ground. How much electric power is consumed by the pump, in filling the tank, if the efficiency of the pump is 50%?
`(g=10m//s^(2)` and density of water `=10^(3)kg//m^(3)`)

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