Question

What is the force, in terms of Coulomb's constant, between two electrical charges of `1 C` and `-9 C` that are `9 m` apart?

Answer 1

Please check the explanation

Explanation:

`F=k(|q_1||q_2|)/r^2 \qquad \rightarrow F/k = (|q_1||q_2|)/r^2`

`q_1 = 1C; \qquad q_2=-9C; \qquad r=9m`.