Question

at what separation should two equal charges 1 coulomb each be placed so that the force between them equals the weight of 50 kg person

Answer 1

Weight of person,W=mg=490N  Force between two charges, F=Cq1q2/r^2 =490   Where C=9×10^9, q1,q2= 1C. Putting all values, find out the value of r which will be 4285m