A liquid having a density of 801 kg/m 3 and a viscosity of 1.49 x 10- 3 Pa·s is flowing through a horizontal straight pipe at a velocity of 4.57 m/s. The commercial steel pipe is 1.5 in nominal pipe size, schedule 40. For a length of pipe of 61 m, do as follows. (A) Calculate the friction loss Ff. (B) For a smooth tube of the same inside diameter, calculate the friction loss. What is the percent reduction of the Ff for the smooth tube?