Final answer:
The electrostatic force between two charges will become 1/9 of the original force if the distance between them is tripled, according to Coulomb's Law.
Step-by-step explanation:
When considering the electrostatic force between two charges, we refer to Coulomb's Law, which states that the force (F) is directly proportional to the product of the two charges and inversely proportional to the square of the distance (r) between them. Mathematically, this is expressed as F = k * (q1 * q2) / r^2, where k is Coulomb's constant. If the distance between two electric charges is tripled, the new force will be 1/9 of the original force, because we square the factor by which the distance increases.