Air at atmospheric pressure and \(20^{\circ} \mathrm{C}\) flows over both sides of a flat plate that is \(0.8 \mathrm{~m}\) long and \(0.3 \mathrm{~m}\) wide at a velocity of \(5 \mathrm{~m} / \mathrm{s}\). Determine the total drag force on the plate. If the single plate is replaced by two plates each \(0.4 \mathrm{~m}\) long and \(0.3 \mathrm{~m}\) wide, what is the total drag force? Explain why there is a difference in the total drag even though the total surface area is the same.