If it is desired to pump breathing air in a hose for a diver at a depth of 14m, what is the maximum force applied to the piston of the pump? The piston has a surface area of 4.5 cm²

Explanation:

Electron cloud model describes the region in an atom which negatively charged and which has probability to find an electron. according to this model, an electron can move closer or away from the nucleus that is it can be inside the nucleus but according to Bohr's model, an electron is always at a fixed distance from the nucleus. Thus, it is the limitation of the electron cloud model but still it is a widely accepted model.