Two objects, A and B, are rubbed together. As a result, object A acquires an excess negative charge while object B becomes positively charged. In comparison to their masses before the charging process, you can say that
A) the mass of both objects increased.
B) the mass of A increased and that of B decreased.
C) the mass of A decreased and that of B increased.
D) the mass of both objects decreased.
E) None of the other choices is correct.
B
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