Question

A balloon rubbed against denim gains a
charge of −5.0 µC.
What is the electric force between the
balloon and the denim when the two are
separated by a distance of 3.0 cm? (Assume
that the charges are located at a
point.) The value of the Coulomb constant is
8.98755 × 109 N · m2
/C
2
.
Include direction of the force.

Answer 1

You should have payed attention in class.