00:01
So we have a cube, a 25 centimeter cube, and we know that pressure is going to be row gd, in this case.
00:09
There's the pressure from the water.
00:10
Well, row, we already know, is 1 ,000 kilograms per meter cubed.
00:16
G, acceleration due to gravity, is 9 .81 meters per second squared.
00:21
And then d is going to be at the top surface, so that's exactly one meter deep minus 0 .2.
00:31
So it's 0 .75 because it's a 0 .75 tall cube, so that's 0 .75 tall cube, so that's 0 .75 meters.
00:40
Then we consider the force, which is equal to p times a...