00:01
So we're looking to find the highest pressure in the water, which is in a column with the gasoline on top of it, and then there's air at the very top of the column as well.
00:12
So we're basically looking for the pressure at the bottom of the column where this green line is.
00:17
So what we first have to do is to find the pressure due to the gasoline and the pressure due to the water above this green line and also take into account the atmospheric pressure.
00:28
So if we write out the formula for finding the pressure of a fluid in a column, we have is the density times gravitational acceleration times the height of the column.
00:42
And we know all these values for both gasoline and water.
00:48
So what we can do is set up an equation that looks like this.
00:52
So we'll take the density of the water, multiply it by g, multiply it by the height of the water.
00:59
And then we're going to add that to the same expression but just for gasoline...