Four capacitors are in combination as shown in the pictured circuit. A battery of AV = 46.0 V supplies a potential difference across the combination of capacitors. C1 = 18.0 pF and C2 = 7.00 pF; the capacitances of the other two capacitors are 12.0 HF and 6.00 uF, as pictured. Enter answers for both parts (a) and (b) below using three significant figures. 12 uF C1 C2 6F AV (a) What is the equivalent capacitance of this combination of four capacitors? Please enter the answer in units of micro-Farads [F]. Ceq= UF (b) What is the total electric potential energy stored in the circuit in this combination of capacitors? Please enter the answer in units of millijoules [m]].