Assume that the wall shear stress, τw, created when a fluid flows through a pipe (see Fi...

Assume that the wall shear stress, τ_w, created when a fluid flows through a pipe (see Fig. P7.43a) depends on the pipe diameter, D, the flowrate, Q, the fluid density, p, and the kinematic viscosity, v. Some model tests run in a laboratory using water in a 0.2-ft-diameter pipe yield the τ_w vs. Q data shown in Fig. P7.43b. Perform a dimensional analysis and use model data to predict the wall shear stress in a 0.3-ft-diameter pipe through which water flows at the rate of 1.5 ft³/s.