Capacitor c1 has a capacitance of 1 x 10-6 f and capacitor

Question

Capacitor C₁ has a capacitance of 1 x 10^-6 F and capacitor C₂ has capacitance 2 x 10^-6 F. Initially the switch S is open and the charge on C₁ is 3 x 10^-6 C and the voltage difference between the upper and lower plate of C₂ is 4 V. At time t = 0 the switch is closed.

a) For time t < 0 how much charge was on C₂?

b) For time t > 0 how much charge will be on C₂?

c) How much energy will be lost from the system when the switch is closed?