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?

(k = 9.0 × 109 newton·meters2/coulomb2)

Answer 1

coulumbs law for point source charges is F = k q1 q2 / r^2

"the distance between the fur and brush is roughly 5.0 × 10-1 meters" that gives you r.

(k = 9.0 × 109 newton·meters2/coulomb2)

Answer 2

yes?

Answer 3

Yes thank you