Finging the charge on each capacitor in series

1. The problem statement, all variables and given/known data

In the circuit in the figure below, assume the resistance values are R1=1,400Ω and R2=2,500Ω, C1=55μF and C2=15μF, and the emf=5.5 V. The switch is labeled S.

Consider the circuit in the figure below and assume the switch has been closed for a very long time.

What are the charges on the two capacitors?

Attachment 71094

2. Relevant equations

C=Q/V, Loop Rule – 5.5-(Q1/55e-6)-(Q2/15e-6)=0, 1/Ceq=(1/C1)+(1/C2)

3. The attempt at a solution

I think I’m just blanking on something here because it’s either a matter of finding the potential across each capacitor or finding another equation relating Q1 and Q2 so that I can solve for both. Maybe Qtotal=CV(1-e^(-t/tau))=Q1+Q2?

Attached Images
File Type: png Screen Shot 2014-07-05 at 11.41.28 PM.png (12.5 KB)

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