Alright, let's try this one...
At time t=0, the switch is closed. Prior to t=0 there was no charge on the capacitor C.
At what time does the capacitor have a charge equal to half the final charge? Express your answer in terms of R and C.
Disclaimer: My partner and I had taken a test where this question was marked wrong for us, but after reviewing the question we believe the graders marked it wrong on accident. We don't know for certain if what we have is the correct answer, but if you come up with the same answer that we got I will assume that you are correct.
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