Problem 2 (16 points). All of the capacitors in the network shown below have identical capacitance 3 nF. (a) (8 points) What is the equivalent capacitance of this network? (b) (4 points) If the entire network is connected across a 9 V source, what total energy is stored all of the capacitors? (c) (4 points) If the entire network is connected across a 9 V source, what is the charge on the topmost capacitor