Question

A total charge of 4.70 is distributed on two metal spheres. When the spheres are 10 cm apart, they each feel a repulsive force of 4.7 x 10^11 N. How much charge is on the sphere and which has the lower amount of charge?

Answer 1

Answer: 4,58 C and 0.12 C

Explanation: Considering the Coulomb force given by:

F=(k*q1*q2)/d^2= (9*10^9*q1*q2)/ (0.1)^2  (1)

so replacing the given values and considering also that the total charge is 4.7C this q1+q2= 4.7 C   (2)

From (1) and (2) we can find the charges in each sphere.