Question

After brushing, Fluffy's fur has a charge of +8.0 × 10-9 coulombs and her plastic brush has a charge of –1.4 × 10-8 coulombs. If the distance between the fur and brush is roughly 5.0 × 10-1 meters, what is the approximate magnitude of the force between them?

Answer 1

The force is
\[F=k*( |q _{1}| *|q _{2}|)/r ^{2}\]
where
The coulomb constant is k=9*10^9 Nm^2/C^2
q1 and q2 are the charges
and r the distance betwwen them