6.5 Air is following over a plate 4m x 2m with a velocity of 5m/s at 15°C. If p=1.208kg/m³ and v=1.47x10³ m²/s, calculate: (i) Length of plate over which the boundary layer is laminar and thickness of the laminar boundary layer, (ii) Shear stress at the location where boundary layer ceases to be laminar, and (iii) total force on both sides on that portion of plate where boundary layer is laminar.