Homework Answers
Value of atmospheric pressure, P0 = 101325 Pa
Pressure of water in the pipe, P1 = 2.9 x P0 = 2.9 x 101325 Pa = 293842.5 Pa
Gauge pressure attached to the water pipes measure pressure with respect to the atmospheric pressure.
Definition of absolute pressure of a point is equal to the gauge pressure and atmospheric pressure.
So, absolute pressure of water pipe = P1 + P0
= 293842.5 + 101325 = 395167.5 Pa (Answer)
Now, convert this pressure into pound per square inch -
Absolute pressure, P = 395167.5 x 0.00015 = 59.27 lb/in^2 (Answer)
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