Apump provides a flow rate of 0.05 m3/s of fluid with density 900 kg/m^3 while density of water at that temperature is 1000 kg/m3. if diffential head is 5 meters and pump efficiency is 85%. calculate the hydraulic power and shaft power?

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.