Air flows over a heated plate at a velocity of 50 m/s. The local skin friction coefficient at a point on a plate is 0.004. The following properties for air are, density = 0.88 kg/m, viscosity = 2.286 105 kg-m/s, specific heat = 1.001 kJ/kg K, thermal conductivity of air= 0.035 W/mK and use St. Pr/ = Cfx/2. 1/3 The local heat transfer coefficient is (a) 11.69 W/m K (b) 116.9 W/m K (c) 58.45 W/m K (d) 29.225 W/m K The average heat transfer per unit area if the temperature difference is 60 C and the flow is assumed to be laminar (a) 701.4 W/m (c) 7014 W/m (b) 1402.8 W/m (d) 14028 W/m