An air bubble of diameter `d=4mum` is located in water at a depth `h=5.0m` considering standard atmospheric pressure at 1 atm, find the pressure in the air-bubble?

Explanation

The pressure has terms due to hydrotatic pressure and capillarity and they add
`p = p_0 + rho gh + (4 alpha)/(d)`
=`(1 + (5 xx 9.8 xx 10^3)/(10^5)+ (4 xx .73 xx 10^-3)/(4 xx 10^-6) xx 10^-5) "atoms" = 2.22` atom.