efficient power transmission

Feed water to a boiler leaves the condenser at a height of 5 m below floor level with an enthalpy of 192 kJ/kg. It passes through a feed pump and leaves at 12m above floor level with an enthalpy of 197.6 kJ/kg. The mass flow of water is 8.4 kg/s. Calculate the rate of work output of the motor driving the feed pump, assuming 100% efficient power transmission. There is no heat transfer and velocities are negligible.

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