10. Air flows over a plate at a particular velocity from left to right. The velocity and boundary layer thickness can be expressed by the following two expressions. Зу 1 у. 2 8 U 28 4.64x %3D VRex...

Extracted text: 10. Air flows over a plate at a particular velocity from left to right. The velocity and boundary layer thickness can be expressed by the following two expressions. Зу 1 у. 2 8 U 28 4.64x %3D VRex where x is the distance measured from the left end of the plate, y is the height above the plate, & is the boundary layer thickness, U. is the free stream velocity and Rex is Reynolds number at a distance x from left end. Calculate the shear stress at x = 1 m, taking the free stream velocity of air to be 2 m s-1, the kinematic viscosity of air to be 1.5 x 10-5 m2 s1 and density of air to be 1.23 kg m-3