P24_057 - 57. (a) Outside the sphere, we use Eq. 24-15 and...

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57. (a) Outside the sphere, we use Eq. 24-15 and obtain ~ E = 1 4 πε 0 q r 2 =1 . 5 × 10 4 N / Coutward . (b) With q =+6 . 00
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