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ch22_p73 - 73 On the one hand the conclusion(that Q = 1.00...

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73. On the one hand, the conclusion (that Q = +1.00 µ C) is clear from symmetry. If a more in-depth justification is desired, one should use Eq. 22-3 for the electric field magnitudes of the three charges (each at the same distance r a = 3 from C ) and then find field components along suitably chosen axes, requiring each component-sum to be
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