Asked by Gen
pressure of a fluid. calculate the a.) absolute pressure b.) gauge pressure at an ocean depth of 1000m. Assume the density of a sea water is 1024 kg cubic meter and that the air above exerts a pressure of 101.3kPa
Answers
Answered by
MathMate
Absolute pressure is the pressure on a surface including atmospheric pressure.
Gauge pressure is the additional pressure acting on a surface over and above atmospheric pressure.
At the ocean depth of 1000 m, gauge pressure is the pressure exerted by the weight of water above the point under consideration.
At a depth of 1000m, and ignoring the variation of g over depth, we have
gauge pressure
=ρgh
=1024*9.81*1000 Pa
=10045 kPa
Absolute pressure is the gauge pressure plus the atmospheric pressure of 101.3 kPa, so
absolute pressure
= 10045+101.3
= 10147 kPa
Gauge pressure is the additional pressure acting on a surface over and above atmospheric pressure.
At the ocean depth of 1000 m, gauge pressure is the pressure exerted by the weight of water above the point under consideration.
At a depth of 1000m, and ignoring the variation of g over depth, we have
gauge pressure
=ρgh
=1024*9.81*1000 Pa
=10045 kPa
Absolute pressure is the gauge pressure plus the atmospheric pressure of 101.3 kPa, so
absolute pressure
= 10045+101.3
= 10147 kPa
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