A force that is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Here's a breakdown:

* Directly proportional to the product of the charges: This means that if you increase the charge of either object, the force between them will increase proportionally.

* Inversely proportional to the square of the distance between them: This means that if you double the distance between the objects, the force will decrease by a factor of four.

This statement describes Coulomb's Law, which mathematically describes the electrostatic force.