Two isolated conducting spheres S₁ and S₂ of radius $\frac{2}{3}\mathrm{R}$ and $\frac{1}{3}\mathrm{R}$ have $12\mathrm{\mu C}$ and $-3\mathrm{\mu C}$ charges, respectively, and are at a large distance from each other. They are now connected by a conducting wire. A long time after this is done the charges on S₁ and S₂ are respectively: