If the radius and surface tension of a spherical soap bubble are 'R' and 'T' respectively, Then show that the charge required to double its radius would be `8piR ,[epsilon_(0)R[7p_(0)R+12T]]^(1/2)`. Where `p_(0)` is the atmospheric pressure.

If r and T are radius and surface tension of a spherical soap bubble respectively then find the charge needed to double the radius of bubble.

If the radius and surface tension of a spherical soap bubble be r and T respectively. Find the charge uniformly distributed over the outer surface of the bubble, is required to double its radius. (Given that atmospheric pressure is P_(0) and inside temperature of the bubble during expansion remains constant.)

A soap bubble of radius r and surface tension T is given a potential V. Show that the new radius R of the bubble is related with the initial radius by the equation P(R^(3) -r^(3)) +4T (R^(2)-r^(2)) = (in_(0)V^(2)R)/(2) where P is the atmospheric pressure.

If R is the radius of a soap bubble and S its surface tension, then the excess pressure inside is

If radius of a spherical bubble starts to increase with time t as r=0.5t . What is the rate of change of volume of the bubble with time t=4s ?

The radius of a spherical soap bubble is increasing at the rate of 0.2 cm/sec. Find the rate of increase of its surface area, when the radius is 7 cm.

The radius of a spherical soap bubble is increasing at the rate of 0.2 cm/sec. Find the rate of increase of its surface area, when the radius is 7 cm.

Electric potential inside hollow charged sphere of radius .r. is ______ [k = (1)/(4pi epsilon_(0))]

A soap bubble of radius 'r' and surface tension 'T' is given a potential of 'V' volt. If the new radiys 'R' of the bubble is related to its initial radius by equation. P_(0)[R^(3) - r^(3)] + [lambda T [R^(2) - r^(2)] - epsilon_(0) V^(2)R//2 = 0 , where P_(0) is the atmospheric pressure. Then find lambda

What is the surface energy of an air bubble of radius r inside a soap solution with surface tension T ?