An airplane flies at a speed of 539 mph at an altitude of 10,000 ft. If the boundary layers on the wing surfaces behave as those on a flat plate, (a) estimate the extent of laminar boundary layer flow along the wing. Assume a transitional Reynolds number of Rexcr = 5 x 105. If the airplane maintains its 539 -mph speed but descends to sea-level elevation, (b) estimate the extent of the laminar boundary layer flow. (c) Will the portion of the wing covered by a laminar boundary layer increase or decrease compared with its value at 10,000 ft?