Question

What is the force, in terms of Coulomb's constant, between two electrical charges of `-15 C` and `60 C` that are `15 m` apart?

Answer 1

I found a force of `4` times `k`.

Explanation:

We can use the expression of Coulomb's Law:
`F=k(|q_1q_2|)/(r^2)`
`F=k(15*60)/(15^2)=60/15*k=4k`