What is the pressure increase inside a soap bubble (Δp), which has two interfaces with air, an inner and outer surface of nearly the same radius 'R' ?
(Consider that 'γ' is the coefficient of surface tension.)
1
Δp = \(\frac{\gamma}{2R}\)
2
Δp = \(\frac{2\gamma}{R}\)
3
Δp = \(\frac{\gamma}{R}\)
4
Δp = \(\frac{4\gamma}{R}\)