Question

What will be the gauge pressure and the absolute pressure of water at depth 12m below the surface?

Answer 1

hello mate

Explanation:

Absolute pressure = gauge pressure + atmospheric pressure.

"Gauge Pressure" is the pressure due the liquid alone. This is given by:

GP=ρgh

= 103×9.8×12=1.17×105N.m−2

=117kPa

To get the absolute pressure we need to add on the pressure due to the weight of the air above it. We add on the atmospheric pressure which I will assume to be 100kPa

Absolute pressure =117+100=217kPa

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