A charge of -6 nc is at the origin and a second charge of, Ask an Expert

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Q. A charge of -6 nC is at the origin and a second charge of 11.0 nC is at x = 5.0m. Find the magnitude and direction of an electric field halfway in between the two charges.

Q. Two speakers, one directly behind the other, are each generating a 235 Hz sound wave. What is the smallest separation distance between speakers that will produce destructive interference at a listener standing in front of them? Take the speed of sound to be 342m/s.

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