ANSWER
EXPLANATION
By Coulomb's Law, the electric force is,
[tex]F=k\cdot\frac{q_1q_2_{}}{r^2}[/tex]Where q₁ and q₂ are the amount of charge in each particle, r is the distance between them and k is the Coulomb's constant, whose value is about 9x10⁹ N*m²/C²