Tag: work done in stretching a liquid surface: surface energy of a liquid
Questions Related to work done in stretching a liquid surface: surface energy of a liquid
A spherical water drop of radius $R$ is split up into $8$ equal droplets. If $T$ is the surface tension of water, then the work done in this process is-
A drop of oil is placed on the surface of water. Which of the following statement is correct?
One thousand small water droplets of equal size combine to form a big drop. The ratio of the final surface energy to the initial surface energy is: (Surface tension of water = 70 dyne/cm)
A metal plane having an area of $0.04\ m^{2}$ is placed on a horizontal wooden surface. Oil of coefficient of viscosity $2\ N/ s/m^{2}$ is introduced between the plate and the surface till the thickness of the oil layer is $0.5$ in. The horizontal force needed to drag the plate along the surface with a velocity of $5\ cm/s$ is
Two spherical soap bubbles of a radii $r _1$ and $r _2$ in vacuum coalesce under isothermal conditions. The resulting bubble has the radius $R$ such that
What is the change in surface energy, when a mercury drop of radius $R$ splits up into $1000$ droplets of radius $r$?
Potential energy of a molecule on the surface of a liquid is as compared to another molecule inside of the liquid is
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