Question

A student using Coulomb's law finds that the electrical force between two objects is -6.9x10-16N. Which of the following pairs could be the two objects?

Answer 1

We know that Coulomb's Law is given as:

`F=k(Q_1Q_2)/(d^2)`

In this case we don't know how apart the charges are, for this reason, we can't determine the product of the charges and hence we can't determine if they are protons or electrons.

Therefore, there is not enough information.