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Unformatted text preview: sphere, 5.0 10-7 C. Therefore, V/m 8000 ) m 75 . ( C 10 . 5 ) F / m 10 . 9 ( 4 1 7 9 = = =-r q E A E A = 8000 V/m b) If the Gaussian surface is in the metal of the outer shell, E = 0 everywhere on the Gaussian surface, so the net charge enclose equals zero. Since there is a charge of 5.0 10-7 C on the inner sphere, there must be a charge of 5.0 10-7 C on the inside of the outer sphere to cancel it. There is also a charge of 5.0 10-7 C on the outside of the outer shell to keep the outer shell neutral, but the question does not ask about that. q i = 5.0 10-7 C q i is: NEGATIVE...
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- Spring '06