A van traveling \(60 \mathrm{~km} / \mathrm{h}\) has just passed through a thunderstorm that left a film of water \(0.05 \mathrm{~mm}\) thick on the top of the van. The top of the van can be assumed to be a flat plate \(6 \mathrm{~m}\) long. Assume isothermal conditions at \(27^{\circ} \mathrm{C}\), an ambient air relative humidity of \(85 \%\), and turbulent flow over the entire surface. What location on the van top will be the last to dry? What is the water evaporation rate per unit area \(\left(\mathrm{kg} / \mathrm{s} \cdot \mathrm{m}^{2}\right)\) at the trailing edge of the van top?