ch23-p042 - 42. The point where the individual fields...

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If d = 0.20 m (which is less than the magnitude of r found above), then neither of the points ( x ± 0.691 m) is in the “forbidden region” between the particle and the sheet. Thus, both values are allowed. Thus, we have (a) x = 0.691 m on the positive axis, and (b) x = 0.691 m on the negative axis. (c) If, however, d = 0.80 m (greater than the magnitude of r found above), then one of the points ( x 0.691 m) is in the “forbidden region” between the particle and the sheet and is disallowed. In this part, the fields cancel only at the point
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