A large water tank has an inlet pipe and an outlet pipe. The inlet pipe has a diameter of 2.19 cm and is 2.13 m above the bottom of the tank. The outlet pipe has a diameter of 5.49 cm and is 4.85 m above the bottom of the tank. A volume of 0.359 m3 of water enters the tank every minute at a gauge pressure of 1 atm.

Question

What is the gauge pressure in the outlet pipe?

Answer 1

of you divide the volume of water/min by the areas, you immediately know the velocities in the inlet and outlet pipes.

Assume the inlet pressure is atmospheric, use Bernoulli's equation then to find outlet pressure. You are given the two heights.