A 1.07 µF capacitor is connected in series with a 1.90 µF capacitor. The 1.07 µF capacitor carries a charge of +11.0 µC on one plate, which is at a potential of 48.0 V. \
(a) Find the potential on the negative plate of the 1.07 µF capacitor.
(b) Find the equivalent capacitance of the two capacitors.