A large water tank has an inlet pipe and an outlet pipe. The inlet pipe has a diameter of 3 cm and is 1 m above the bottom of the tank. The outlet pipe has a diameter of 6 cm and is 8 m above the bottom of the tank. A volume of 0.8 m3 of water enters the tank every two minutes at a gauge pressure of 1 atm.
(a) What is the velocity of the water in the outlet pipe?
(b) What is the gauge pressure in the outlet pipe?