库仑力Fa = k*Q1*Q2/r^2万有引力Fb = G*M1*M2/r^2Fa/Fb = k*Q1*Q2/(G*M1*M2)k = 9×10^9 牛顿 米^2 /库仑^2Q1 = Q2 = 1.602 × 10^(-19) 库仑G = 6.673×10^(-11)米^3/千克秒^2M1 = 1.67×10^(-27)千克M2 = 9.31×10...