A small metal sphere has a mass of 0.14 g and a charge of - 22.0 nc. it is 10 cm directly above an identical sphere with the same charge. this lower sphere is fixed and cannot move. part a what is the magnitude of the electric force between the spheres?

For this problem, we use the Coulomb's law written in equation as:

F = kQ₁Q₂/d²

where

F is the electrical force

k is a constant equal to 9*10⁹

Q₁ and Q₂ are the charge of the two objects

d is the distance between the two objects

Substituting the values:

F = (9*10⁹) (-22*10⁻⁹ C) (-22*10⁻⁹ C) / (0.10 m) ²

F = 0.0004356 N