Surface Tension

A soap bubble of radius is blown up to form a bubble of radius under isothermal conditions. If is the surface tension of soap solution, the energy spent in the blowing

The potential of a large liquid drop when eight liquid drops are combined is 20 V. Then the potential of each single drop was

Two mercury drops (each of radius r) merge to form a bigger drop. The surface energy of the bigger drop, if T is the surface tension, is

Kerosene oil rises up in a wick of a lantern because of

A large number of liquid drops each of radius r coalesce to from a single drop of radius R. The energy released in the process is converted into kinetic energy of the big drop so formed. The speed of the big drop is (given, surface tension of liquid T, density )