Two identical metal spheres, one carrying a \(12.0 \mu \mathrm{C}\) charge and the other carrying a \(-32.0 \mu \mathrm{C}\) charge, are initially \(50 \mathrm{~mm}\) apart. They are brought in contact with each other and then moved back to their original positions. What is the numerical value of the ratio \(F_{\mathrm{i}}^{E} / F_{\mathrm{f}}^{E}\), where \(F_{\mathrm{i}}^{E}\) is the magnitude of the electric force between the spheres before they are brought in contact and \(F_{\mathrm{f}}^{E}\) is the magnitude of that force after they are brought together and then moved back to their initial positions?