Water (density 1 kg/m^3) at 20 c flows at a reynolds number of 2000 inside a tube with a diameter of 3.66 cm, which is maintained at 70c. the flow velocity is 1 m/s. the heat transfer coefficient w/m^2-k for this flow is a)-500 b)-128.5 c)-50 d)-15 w/m

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.