(See Problem 26.67.) (a) What is the potential of point a with respect to point b in Fig...

(See Problem 26.67.) (a) What is the potential of point a with respect to point b in Fig. P26.75 when the switch S is open? (b) Which point, a or b, is at the higher potential? (c) What is the final potential of point b with respect to ground when S is closed? (d) How much does the charge on each capacitor change when S is closed?