How is force between two charges affected when each charge is doubled and distance between them is also doubled?

How is magnetic force between two poles affected when strength of each pole is doubled and distance between them is halved?

What happens to the gravitational force between two objects if masses of both objects are doubled and distance beteen them is also doubled?

What will be the effect on the capacity of a parallel plate capacitor when the area of each plate is doubled and the distance between them is also doubled?

The gravitational force between two bodies is F. If the mass of each body is doubled and the distance between them is halved , them the force between them will be

How is coulomb force between two charges affected by the presence of third charge.

Force between two charges varies directly as the square of the distance between them. !

Two charges spheres are separated at a distance d exert a force F on each other, if charges are doubled and distance between them is doubled then the force is