- #1
DrMcDreamy
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Homework Statement
This is a two part problem:
a) A reservoir behind a dam is 56 m deep. What is the gauge pressure at the base of the dam? The acceleration of gravity is 9.8 m/s 2 and atmospheric pressure is 10100 Pa . Answer in units of kPa.
b) What is the gauge pressure 19 m from the top of the dam? Answer in units of kPa.
Homework Equations
I don't know what formula I am suppose to use. I know it has to do with gauge pressure, so a guess:
P2=P1 + [tex]\rho[/tex]gh
OR
P1+[tex]\rho[/tex]gh1+[tex]\rho[/tex][tex]\frac{v1^2}{2}[/tex]=P2+[tex]\rho[/tex]gh2+[tex]\rho[/tex][tex]\frac{v2^2}{2}[/tex]
The Attempt at a Solution
But I don't know the exact pressure, I just know since its minimal, the top and bottom velocity (I believe) gets cancelled.
So are either of those right? If not, what do I use? TIA