7.
Vr - Vc = 0
Vr = Vc = 11.2 V
8.
I = Vr / R = 11.2 / 300 =0.037 A
9. Vc = V [ e^(-t/RC) ]
so this is Exponential decay.
When discharging the 20.0 mF capacitor, you measure a voltage of 11.2 V across the capacitor....
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