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Q. A 1.00 V potential difference is maintained across a 7.0 resistor for a period of 20.0 s. What total charge passes through the wire in this time interval?

Q. A state highway patrol car radar unit uses a frequency of 9.00 x 10^9. what frequency difference will the unit detect from a car receding at a speed of 46.5 m/s from stationary patrol car?

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