What is the speed with which the water flows out of the hose

[jaidon]

I am new here so I hope that someone may have some advice. I am having trouble with a homework question which is quite lengthy. -- A large tank of water has a hose connected to it as shown in the figure. The tank is sealed at the top and has compressed air between the water surface and the top. When the water height, h, has the value 3.50m, the absolute pressure p of the compressed air is 4.20x10^5 Pa. Assume that the air above the water expands at a constant temperature, and take the atmospheric pressure to be 1.00x10^5 Pa. a)What is the speed with which the water flows out of the hose when h=3.50m? b)As water flows out of the tank, h decreases. Calculate the speed of flow for h=3.00m and h=2.00m c)At what value of h does the flow stop?-- The figure shows a tank of height=4.00m and the water level is lower than 4.00m giving the air gap. The hose is on the side in a "Z" shape with the top of the "Z" being 1.00m from ground level. I don't know if anyone can help, but I would appreciate the input.

 

[HallsofIvy]

1. There is no figure.

2. Since this is homework, it should be posted in the homework section.
(Though it was nice of you to tell us!)

 

[Doc Al]

This has been posted here: https://www.physicsforums.com/showthread.php?t=48382