1. The problem statement, all variables and given/known data Glycerin is poured into an open U-shaped tube until the height in both sides is 20 cm. Ethyl alcohol is then poured into one arm until the height of the alcohol column is 20 cm. The two liquids do not mix. What is the difference in height between the top surface of the glycerin and the top surface of the alcohol? 2. Relevant equations 3. The attempt at a solution I'm not sure where to go with this one. I would think that they would be the same height. the answer is 7.46 cm I had to request the answer. I have a test today so I stilll need to know how to get the answer.