Problem 71HP

The pressure gauge on an air tank shows 75 kPa when the diver is 10 m down in the ocean. At what depth will the gauge pressure be zero? What does that mean?

Solution 71HP

Step 1 of 2

We have to find at what depth will be the gauge pressure equal to zero and what does it mean, if the pressure gauge on an air tank shows 75 kPa when the diver is 10 m down in the ocean.

The hydrostatic pressure at the depth of 10 m is given by the expression,

Where,

atmospheric pressure

= 101,325 Pa

kg/m3

m/s2

m

Thus,