Water flows in a smooth pipe of diameter 1 ft with a velocity of 10 ft/s. If the kinematic viscosity of the water is 1.21*10-5 ft2/s, the headloss due to friction over a pipe length of 1000 ft is most nearly:

Acertain flow of air (at stp) has a velocity distribution given by v i (in ft/s). if this flow is going through a 4 ft square area in the yz-plane (centered at the origin), what is the mass flow rate (in lbm/s)?