​can you solve q -8

​can you solve q -8 and similar charges. They repel each other with a force 103 N, when they are placed 10 cm apart in a medium of dielectric constant 7. Determine the charge on each sphere. [Ans. 28•3 x 10-6 Cl 8 Calculate the Coulomb force between two alpha particles separated by a distance of x 10¯15 m [Ans. 90 N, repulsive)l in air. 9. What equal charges would have to be placed on earth and moon to neutralize their gravitational attraction ? Given, mass of earth = 1025 kg, mas of moon = 1023 kg. [Ans. x 1013 c