A vessel filled with air under pressure p_(0) contains a soap bubble of diameter d. The pressure having been reduced isothermally n fold, the bubble diameter increased eta fold. Calculate the surface tension of siap water solution.

A vessel filled with air under pressure p_(0) contains a soap bubble o

1.	A vessel filled with air under pressure p_(0) contains a soap bubble of diameter d. The pressure having been reduced isothermally n fold, the bubble diameter increased eta fold. Calculate the surface tension of siap water solution.
Answer» <P> ANSWER :`(p_(0)d(1-eta^(3)/N))/(8(eta^(2)-1))`