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The RC circuit of (Figure 1) has R=6.4kΩ and C=4.0μF . The capacitor is at voltage...

The RC circuit of (Figure 1) has R=6.4kΩ and C=4.0μF . The capacitor is at voltage V0 at t=0,when the switch is closed.

Part A

How long does it take the capacitor to discharge to 0.30 % of its initial voltage?

Express your answer to two significant figures and include the appropriate units.

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