The diameter of a soap bubble is 8 mm and the surface tension of soap solution is 4xx10^(-3)Nm^(-1). Find the excess pressure inside the bubble.

The diameter of a soap bubble is 8 mm and the surface tension of soap

1.	The diameter of a soap bubble is 8 mm and the surface tension of soap solution is 4xx10^(-3)Nm^(-1). Find the excess pressure inside the bubble.
Answer» SOLUTION :Diameter of th BUBBLE `8mm=8xx10^(-3)m` Radius of the bubble `(r)=4xx10^(-3)m` Surface tension (S) `=4xx10^(-2)NM^(-1)` Excess pressure inside the bubble `=(4S)/r` `=(4xx4xx10^(-2))/(4xx10^(-3))=40Nm^(-2)` `:.` Excess pressure inside the bubble `=40Nm^(-2)`