Tag: A charge of -7 x 10^-8C exerts a force of 0.045N on a charge of +6.0 x 10^10-7. How far apart far are the charges?

A charge of -7 x 10-8 C exerts a force of 0.045 N on a charge of +6.0 x 10-7. How far apart far are the charges?   f=kQq/r2 Rearanged: [sqrt](kQq/r2) =[√](9×109)(7×10-8C)(6×10-7C)/(0.… r=.092m