00:04
Hello, so we have our tank.
00:09
Let's call the surface here one.
00:12
And let's call the leak here, the point here, two, where the leak is.
00:20
Now, we measure our height from this reference point, which is the bottom, so that the height of one above this point is height one, which is given us 11 meters.
00:33
That is the height of one above the reference point.
00:40
The height of 2 is 0 because 2 is on the reference point.
00:46
So we apply by now this equation, this is p1 plus half row b squared 1 plus ogh1 equals p2 plus half row is squared 2 plus ogh2.
01:06
The pressure 1 here and the pressure 2 here is simply atmospheric pressure.
01:12
So this consoles this.
01:16
Velocity 1 is 0 because the water surface decreases very slow.
01:22
If this surface is very large compared to the hole, you will not be noticed the water level falling.
01:27
So the v1 is approximately zero...