00:01
What is the minimum pressure at which the water must be pumped? so our minimum pressure, p, is equal to p -not plus row g -h.
00:12
Our p -not is 1 -tm.
00:15
Our density is a density of water, and we know g is due to gravity.
00:19
So p is equal to 1 -atm plus 1 ,000 times 9 .8 times our height of, our height given to us in our problem, which is equal to our 2093 minus our elevation of the river, 564.
00:51
So if we plug this into a calculator, we'll be plugging in 1 plus 1 ,000 times a 9 .8 times 2093 minus 564.
01:02
And we get our pressure is equal to 149 -84 -201.
01:25
Pascals, should say pascals.
01:29
Or actually, we need to convert our pnot instead of just one.
01:34
We're going to be plugging this in as 101 .325 kpa plus, let's multiply this right hand side out.
01:45
We have 1000 times 9 .8 times 2093 minus 564, which is equal to 14.
02:02
Point is going to be equal to 14 .9 mpa...