Help with capacitor problem

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Capacitor question!

Hi, I just need someone to help me with a capacitor question T.T
PLEASE SHOW WORKInG Out AND THE ANSWERS!

THANK YOU~~
 
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  • Circuit schematic with a 30 V source, 8 kΩ and 4 kΩ resistors, a single pole double throw switch, a 15 nF capacitor with voltage vc, and a 2 kΩ resistor carrying current i(t), with t = 0 marked at the switch.
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just write
i=dq/dt
and then solve the differential equations

is the answer to the current question one minute? or some other multiple of 60 seconds...i think i may have screwed up the units
 
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