Steam at 40°C condenses on the outside of a 5-m-long,3-cm-diameter thin horizontal copper...

Steam at 40°C condenses on the outside of a 5-m-long,3-cm-diameter thin horizontal copper tube by cooling water that enters the tube at 25°C at an average velocity of 2 m/s and  leaves at 35°C. Determine the rate of condensation of steam.