Chapter 12, Problem 37P

To determine

The meters of air space left inside a 4 m tall diving bell, which was initially filled with air at $1.0\times {10}^5{\text{ N/m}}^2$ and when it is dipped 30 m below the ocean surface, the pressure inside increases by $1.0\times {10}^5{\text{ N/m}}^2$ for every 10 m we go down. Assume the temperature to be constant. Also, state why the water doesn’t enter the bell.