1. The problem statement, all variables and given/known data Calculate the force of electric repulsion between two small spheres placed 1.0 m apart if each has a deficit of 1.0 x 10^8 electrons. 2. Relevant equations N = q/e qe = mg q = mg / e q = mgr / Vb e = 1.602 x 10^-19 C. k = 9 x 10^9 - not sure if relevant or not. Fe = qe Answer ( as stated in the textbook): 2.3 x 10^-12N 3. The attempt at a solution Fe = qe? r = 1. 0 m e constant used g = 9.8 N/kg? Fe = (1.0 x 10^8 C)( 1.6 x 10^-19 C)x (1.0m/9.8N/kg) = 1.63 x 10^-12 N.