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4. E GO Four identical metal spheres have charges of qA 8.0 uC, qB -2.0 μC, qc_ +5.0 μC, and q,-+1 brought together so they touch, and then they are separated. Which spheres are they, if the final charge on each one is +5.0 C ner, which three spheres are brought together and then separated, if the final charge on each of the three is +3.0 μC? (c) The final charge on each of the three separated spheres in part (b) is +3.0 HC. How many electrons would have to be added to one of these spheres to make it electrically neutral? 2.0 uC. (a) Two of the spheres are
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