A well-insulated pump steadily delivers water at a volumetric flow rate of 0.05 m^3/s through an insulated pipe of a diameter 18 cm located 100m above the inlet pipe, which has a diameter of 15 cm. The pressure is nearly equal to 1 bar at both the inlet and exist, and the temperature is nearly constant at 20 C throughout the system. Determine the power required by the pump, in KW.