12.37 In the case of carbon monoxide at 100°F flowing along a plane surface at a velocity of 4 ft/s, will the boundary layer flow at a position 0.5 ft from the leading edge be laminar, or turbulent? What will be the boundary-layer thickness at this location? For a plane surface 0.5 ft long with an effective area of 200 ft² on each side, determine the total drag force exerted if both sides are exposed to the flow of CO.