a water storage tank is an upright cylinder of height 8 m and radius 6 m. The storage tank is full of water but is vented to the atmosphere. The bottom of the tank is placed 30 m off the ground. A pipe of diameter 12 cm runs vertically down from the tank and goes 1 m underground before turning horizontal.
a: what is the water pressure in the bottom of the tank?
b: in the horizontal pipe underground?
c: the water flow in the pipe is 80 L/s. How fast does the water level in the tank drop?
d: A saboteur drills a hole of diameter 6 mm near the bottom of the tank, how fast does the water shoot out?
e: What volume flow of water is lost out the hole?