If a charge is located at the center of a spherical volume and the electric flux through the surface of the sphere is φ o, what is the flux through the surface if the radius of the sphere doubles?

The electric flux remains unchanged

Explanation:

From Gauss law the Electric flux is directly proportional to the number of electric field lines passing through a surface. The number of field lines passing through a surface become if the radius is doubled becomes 1/4th that is when radius of the Gaussian surface is doubled, but at the same time, the surface area has increased 4 times , so the electric flux remains unchanged

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.