What is the work done in blowing soap bubble of radius 'r' and surface tension `'sigma'`?

What is work done?

Calculate the work done in blowing o soap bubble of radius 5 cm(surface tension of soap solution= 3xx10^-2 N/m).

Find the work done in blowing a soap bubble of surface tension 30xx10^-3 Nm^-1 from 20mm radius to 40mm radius.

What is the excess pressure in a soap bubble of radius 10 mm, if surface tension is 25 Xx 10^-2 N/m?

Calculate the excess of pressure in a soap bubble of radius 3xx10^-3 m surface tension of the soap solution is 20xx10^-3 N/m.

What is the work done when the force on the object is zero?

What is the S.I. unit of work done?

Calculate the excess pressure inside a| liquid drop of radious r and surface tension T. What is the expression of I excess presure inside a soap bubble?

What is the volume of a solid sphere of radius 2R?

What is the effect of temperature on surface tension?