c. n
The magnitude of the gravitational force is given by Newton's law of universal gravitation:
[tex]F_g=-G\frac{m_1m_2}{d^2}[/tex]
Here G is the gravitational constant, [tex]m_1, m_2[/tex] are the masses of the particles and d is the distance between them.
The magnitude of the electrostatic force is given by Coulomb's law:
[tex]F_e=k\frac{q_1q_2}{d^2}[/tex]
Here k is the Coulomb constant, [tex]q_1, q_2[/tex] are the chargues of the particles and d is the distance between them.
As can be seen, both forces are inversely proportional to the square of the distance. Thus, the factor is the same in both cases.
