Please solve all with steps :(((

1. In the following circuit, the capacitance for C1 is 9 uF, and that for C2 is 6 HF. (a) Find the equivalent capacitance of the network between a and b; (b) When Vub = Va - Vb = 120V, find the charge on the C2 capacitor. 4 :T: '1 C1 2. In the following circuit, (a) Find the potential of point a with respect to point b, Vab = Va Vb} (b) When points a and b are connected with a wire, find the direction and magnitude of the current flowing through the 12V battery. 39 19 3. In the following circuit, find the power dissipated in the 20-9 resistor between point a and point 19, 15.0 [59 100