Repeat Problem 8.12 if the pipe is on a 20° hill. Is the flow up or down the hill? Explain. Water flows in a constant-diameter pipe with the following conditions measured: At section (a) pa = 32.4...

Repeat Problem 8.12 if the pipe is on a 20° hill. Is the flow

up or down the hill? Explain.

Water flows in a constant-diameter pipe with the following

conditions measured: At section (a) pa = 32.4 psi and za = 56.8 ft;

at section (b) pb = 29.7 psi and zb = 68.2 ft. Is the flow from

(a) to (b) or from (b) to (a)? Explain.