Experiments have shown that, for airflow at T∞ = 35°C and V1 = 100 m/s, the rate of heat transfer from a turbine blade of characteristic length L1 = 0.15 m and surface temperature Ts, 1 = 300°C is q1 = 1500 W. What would be the heat transfer rate from a second turbine blade of characteristic length = 0.3 m operating at Ts.2 = 400°C in airflow of T∞ = 35°C and V2 = 50 m/s? The surface area of the blade may be assumed to be directly proportional to its characteristic length.