Under the right weather conditions, wind can align with advertising billboards, presenting an excellent opportunity to examine a real-world occurrence of boundary layer flow over a flat plate. Consider a cold (p = 2.469 x 10-3 slug = 3.60 10-7bf5) windy day with 20 mph ft3, air blowing across a 48 ft long billboard. A novice engineer (probably in a different fluids class) calculates the drag force on the billboard using a Blasius boundary layer. You decide to check the applicability of this calculation. a) Estimate the drag coefficient assuming a Blasius boundary layer. b) Calculate the expected location x (from the leading edge) of the turbulent transition of the boundary layer, assuming transition occurs at Rex,cr = 5 x 105. c) Assuming the boundary layer is a laminar Blasius boundary layer up to the point of transition, what is the boundary layer thickness at the location found in part b? d) Assuming transition to a turbulent boundary layer occurs at Rex,cr = 5 x 105, estimate a proper drag coefficient for the given flow. e) Cite an equation, table, or figure part d. which was used for the estimate in