What is the head loss in a 7-in diameter pipe 118 ft long that has a friction factor of 0.027 if the average velocity of the liquid flowing in the pipe is 17 ft/s? What is the radius of a pipe, if the...

What is the head loss in a 7-in diameter pipe 118 ft long that has a friction factor of 0.027 if the average velocity of the liquid flowing in the pipe is 17 ft/s?

What is the radius of a pipe, if the head loss is 1.6 ft when a liquid with a friction factor of 0.033 is flowing with an average velocity of 4.3 ft/s through 73 ft of pipe?