1. The problem statement, all variables and given/known data Richard Feynman once said that if two persons stood at arm's length from each other and each person had 1% more electrons than protons, the force of repulsion between the two people would be enough to lift a "weight" equal to that of the entire earth. Carry out an order-of-magnitude calculation to substantiate this assertion. 2. Relevant equations F(elec) = k*q^2 / r^2 mass of Earth = 5.9742 × 10^24 kilograms 3. The attempt at a solution I am stuck with the beginning; how do I know how many electrons that is? And how do I find the charge given the number of electrons? Thanks a lot!