You work for the city water department and need to pump 3400 liters/min of water from a tank at ground level into a water tower, 75 meters above ground. The pump can be considered adiabatic, and the combined efficiency of pump and drive motor is 90 percent. determine (a) the electric power required (kW) to drive the pump if friction losses are neglected; and (b) the average velocity (m/s) of the water if a 20 cm diameter (ID) pipe is used.