A 0.20-F capacitor is to be charged through a resistor so that it becomes 63 percent charged in 0.10 s. What should the resistance of the capacitor be? (b) What is the time constant if the capacitor is charged through a 20-MΩ resistor?

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Q: sound with a frequency of 144 kHz in a cave where the temperature is 28°C. Assume that air behaves…

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