Two metal spheres are identical. They are electrically
Chapter 18, Problem 18.160(choose chapter or problem)
Two metal spheres are identical. They are electrically neutral and are touching. An electrically charged ebonite rod is then brought near the spheres without touching them, as the drawing shows. After a while, with the rod held in place, the spheres are separated, and the rod is then removed. The following statements refer to the masses mA and mB of the spheres after they are separated and the rod is removed. Which one or more of the statements is true? (a) mA m B (b) mA m B if the rod is positive (c) mA m B if the rod is positive (d) mA m B if the rod is negative (e) mA m B if the rod is negative
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