4. Two charges -2q and 3q are used to polarize a conductor. The conductor has an unknown charge of qu on the left end, and an unknown charge of qr on the right side. See figure. The magnitude of the force between -2q and qz is F =keq d 2 and the magnitude of the force between 3q and qr is F = 64.q d2 Find the net charge of the conductor. The knowns are ke, d and q. Assume all charges are point charges. (15 points) polarized conductor - 29 39 91 = ? 9 R = ? + - + I + d