Two positively charged particles , each of mass $\;1.7\times10^{-27}\;kg\;$ are carrying a charge of $\;1.6\times10^{-19}\;$ are placed r distance apart. If each one experiences a repulsive force equal to its weight , find r ?

Question

$(a)\;0.117\;m\qquad(b)\;0.011\;m\qquad(c)\;1.17\;m\qquad(d)\;1.17\;cm$