Columnist Dave Barry poked fun at the name "The Grand Cities" adopted by Grand Forks, North Dakota, and East Grand Forks, Minnesota. Residents of the prairie towns then named their next municipal building for him. At the Dave Barry Lift Station No. 16, untreated sewage is raised vertically by 5.49 m, at the rate of 1 890 000 liters each day. The waste, of density 1 050 kg/m3, enters and leaves the pump at atmospheric pressure, through pipes of equal diameter.(a) Find the output mechanical power of the lift station.(b) Assume an electric motor continuously operating with average power 5.90 kW runs the pump. Find its efficiency.
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