Two 2 cm * 2 cm metal electrodes are spaced 1.7 mm apart and connected by wires to the terminals of a 9.0 V battery.
1. The wires are disconnected, and insulated handles are used to pull the plates apart to a new spacing of 3.4 . What is the charge on each electrode? Express your answer using two significant figures.
2. What is the potential difference between electrodes? Express your answer using two significant figures.