When a camera flash goes off, the batteries recharge the flashs capacitor to a charge Q according

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When a camera flash goes off, the batteries recharge the flash’s capacitor to a charge Q according to Q = Q0 (1 − e−kt), where Q0 is the maximum charge. How long does it take to recharge the capacitor to 90% of capacity if k = 0.5?

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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