A smooth pipe designed to carry crude oil (D = 60 in., = 1.75 slugs/ft 3

A smooth pipe designed to carry crude oil (D = 60 in., ρ = 1.75 slugs/ft³, and μ = 4 × 10^–4 lbf-s/ft ²) is to be modeled with a smooth pipe 4 in. in diameter carrying water (T = 60°F). If the mean velocity in the prototype is 4.5 ft/s, what should be the mean velocity of