# Don't panic

**Classical Mechanics**Level 5

A scuba diver is originally neutrally bouyant (she just floats without moving) 20 m below the surface of the ocean. She's enjoying photographing a wreck in nice 20 degrees Celsius water when her air hose catches on a piece of wreckage, puncturing it. 10 L of gas (assume it's all \(N_2\) with mass 28 g/mol for ease of calculation) escapes from her tank before she can clamp the hole. After the gas has escaped, what is the net force on the diver?

**Details and assumptions**

- You may take the density of ocean water to be \(1025~kg/m^3\).
- Atmospheric pressure is 101325 Pa.
- R is 8.314 J/(mol K).
- The acceleration due to gravity is \(-9.8~m/s^2\).