ABCD is thin iron shet. A hole with radius r is made in it in the middle. If we heat up the sheet, what will happen to the holw.

If we introduce a large thin metal plate between two point charges, what will happen to the force between the charges?

If we introduce a large thin metal plate between two point charges, what will happen to the force between the charges?

A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank.

A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank.

A hemishpherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank.