Asmooth, thin airfoil is to be tested in a wind tunnel. the airfoil chord length is 0.8 m. the airfoil surface is heated to a temperature of 55°c. the free stream air is at 25°c and has a velocity of 55 m/s. determine: a) h at 0.5 m from the leading edge, b) the average heat transfer coefficient for the entire chord length, and c) the heat transfer rate per meter of airfoil width (include upper and lower surfaces).