We want to see the effect of wind speed on the heat transfer coefficient between a human body and air. Calculate the average heat transfer coefficient at three different air velocities: \(1 \mathrm{~m} / \mathrm{s}, 5 \mathrm{~m} / \mathrm{s}\), and \(10 \mathrm{~m} / \mathrm{s}\). Assume the human body is a flat plate, \(0.5 \mathrm{~m}\) long. The surface temperature is \(32^{\circ} \mathrm{C}\) while the air temperature is \(20^{\circ} \mathrm{C}\).

Use: \(\operatorname{Pr}=0.7 \quad \mathrm{~V}=1.7 \times 10^{-6} \mathrm{~m}^{2} / \mathrm{s} \quad k_{f}=0.03 \mathrm{~W} / \mathrm{m} \mathrm{K}\)