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Unformatted text preview: = / 2 . We want to solve for the value of z such that E/E c = 1 / 2. This means 1 z z 2 + R 2 = 1 2 = z z 2 + R 2 = 1 2 . Squaring both sides, then multiplying them by z 2 + R 2 , we obtain z 2 = ( z 2 / 4)+( R 2 / 4). Thus, z 2 = R 2 / 3 and z = R/ 3....
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 Fall '08
 SPRUNGER
 Physics, Charge

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