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2. A negatively charged plastic rod comes close to, but does not touch, a neutral metal sphere. While the rod is still close, someone momentarily

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2. A negatively charged plastic rod comes close to, but does not touch, a neutral metal sphere. While the rod is still close, someone momentarily touches the opposite side of the sphere with her finger. The charge on the metal sphere is (a) negative (b) positive (c) neutral (d) cannot be determined (7.1) K/U

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