Coulomb's Laws--> Please help!!!! 1. Object A is metallic and electrically neutral. It is charged by induction so that it acquires a charge of -2.9 x 10-6 C. Object B is identical to object A and is also electrically neutral. It is charged by induction so that it acquires a charge of +2.4 x 10-6 C. Find the difference in mass between the charged objects. Na=(-2.9*10^-6)/(1.602*10^-19)=-1.81*10^13 Nb=(2.4*10^-6)/(1.602*10^-19)=1.49*10^13 (Nb-Na)(Mass of electron)=3.7*10^-18 what did i do wrong? 2. In a vacuum, two particles have charges of q1 and q2, where q1 = +3.6 uC. They are separated by a distance of 0.36 m, and particle 1 experiences an attractive force of 4.2 N. What is the value of q2, with its sign? i used the equatioin F=[k(q1)(q2)]/r^2 I changed uC to C--> 3.6*10^-6 C meters to km F=4.2 i plugged in the knows and solved for q2 and got 1001.3 C. please help! thanks in advance!