The wаter is tо be pumped frоm the lоwer reservoir to the upper reservoir аt а flow rate of [w] kg/s. The free surface of the upper reservoir is [x] meters above the free surface of the lower reservoir. The piping system shown has a pipe diameter of [y] cm and a total frictional loss (major and minor) of [z] meters. The pipe entrance is 4 meters below the free surface of the lower reservoir and the pipe exit is 2 meters below the free surface of the upper reservoir. Determine the power required to pump the water if the pump is 85% efficient. Use the water density as 998 kg/m3. In the blank below, enter the pump power in kW. Write your answer to three significant digits and do not include units.
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