Problem 6-49: A 4-m x 4-m flat plate maintained at a constant temperature of 80°C is subjected to parallel flow (on both sides) of air at 1 atm, 20°C, and 10 m/s. The total drag force acting on the upper surface of the plate is measured to be 2.4 N. Using momentum-heat transfer analogy, determine the average convection heat transfer coefficient, and the rate of heat transfer between the upper surface of the plate and the air.