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## Homework Statement

For this problem use: ρwater = 1000 kg/m3

A cylindrical water-storage tank has a height of 7.9 m and a radius of 6.2 m. The storage tank is full of water but is vented to the atmosphere. The bottom of the tank is 35 m off the ground. A 12 cm diameter pipe runs vertically down from the tank and goes 1.7 m underground before turning horizontal. The water flow in the horizontal pipe is 85 L/s.

What is the water pressure in the horizontal pipe underground? (kPa)

## Homework Equations

*p=F/A*

pascal (Pa) = 1N/m

^{2}

*p=ρgd*

Atmospheric Pressure = 101.3kPa

## The Attempt at a Solution

I know that gauge pressure is ρ*gravity*depth. I am assuming my problem is that I am not using the appropriate height as rho and gravity are given. For heights I have tried numerous combinations of heights. I have tried 1.7, 1.7+35, 1.7+35+7.9. This is a hydrodynamics problem, so my method may be incorrect in trying to solve for the pressure.