Liquid water at an absolute pressure of 100 kPa and a temperature of 20C (State 1) enters a well- insulated pump operating at steady state with a mass flow rate of 10 kg/s through a pipe with inner diameter of 0.03 m. Liquid water at an absolute pressure of 1000 kPa and a temperature of 20C (State 2) exits the pump through a pipe with inner diameter of 0.01 m. The elevation at the inlet is 1 m and the elevation at the exit is 1000 m. Isentropic efficiency of the pump is 70%