Apump steadily delivers water through a hose terminated by a nozzle. the exit of the nozzle has a diameter of 2.5 cm and is located 4 m above the pump inlet pipe, which ahs a diameter of 5.0 cm. the pressure is equal to 1 bar at both the inlet and the exit, and the temperature is constant at 20 degrees c. the magnitude of the power input required by the pump is 8.6 kw, and the acceleration of gravity is g= 9.81m/s2. determine the mass flow rate delievered by the pump in kg/s.