1. The problem statement, all variables and given/known data A tube of length L = 25 m that is open at one end contains air at atmospheric pressure. This is done in Denver so atmospheric pressure P = .667 X (1.10 X 105 Pa). The tube is thrust vertically into a freshwater lake until water rises halfway up in the pipe. Find the depth of the tube in the water. Note: air can be treated as an ideal gas. In the attachment there is a picture on problem #5. The picture will really help clarify the problem. 2. Relevant equations P = P(initial) + [tex]\rho[/tex]gd [tex]\Sigma[/tex]F = ma P=F/A 3. The attempt at a solution I know the pressure of the air inside the tube and I also know that the forces exerted by the air and the water are the same but I am just not sure how to tie all of these things together to find the depth.