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Homework Statement
The attempt at a solution
To find the height of mercury I have used the following equation:
P _{gauge}=\rho _{air}\cdot g\cdot h_{air}+\rho _{Hg}\cdot g\cdot h_{Hg}
where P _{gauge}=3.75 KPa
So I solve for h_{Hg} and get 2.8 cm. I don't think this is correct. Am I even using the correct equation?
The attempt at a solution
To find the height of mercury I have used the following equation:
P _{gauge}=\rho _{air}\cdot g\cdot h_{air}+\rho _{Hg}\cdot g\cdot h_{Hg}
where P _{gauge}=3.75 KPa
So I solve for h_{Hg} and get 2.8 cm. I don't think this is correct. Am I even using the correct equation?
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