You work for the city water department and need to pump 3400 liters/minute of water from a tank at ground level into a vented (i. e., open-top) water tower, 75 meters above ground. the pump can be considered adiabatic, and the combined efficiency of pump and its drive motor is 90 percent. determine: the electric power required (kw) to drive the pump if friction losses are neglected and the average velocity (m/s) of the water if a 20-cm diameter (id) pipe is used.