If the two nuclei were moved to a separation of 8.0 m, explain, in a sentence...?

Question

Two nuclei of nitrogen-14 each have masses of 2.3 × 10−26 kg and are separated by a distance of 2.0 m. The electric charge of each nucleus is +7e.

If the two nuclei were moved to a separation of 8.0 m, explain, in a sentence, how the strength of the gravitational force and the strength of the electric force between the two nitrogen-14 nuclei would change, if at all, with respect to the forces calculated in (a) and (b). (Note: you do not need to repeat the calculations from parts (a) and (b) to answer this.)

Answer 1

Gravitational and electrostatic forces follow inverse-square distance laws, so if you increase the distance by a factor of 4, you decrease these forces by a factor of 16.