2. Water flows in a constant diameter pipe with the following conditions measured: At section (a) pa= 32.4 psi and zą = 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. (Hint: Watch video “Chapter-8 Flow Direction.mp4")(a)