Answer :
when student places two charged objects near each other. The objects repel each other. The student concludes that the objects must both be negative .
YES, the conclusion is accurate according to rule like charges repel each other for example negative to negative, positive to positive and unlike charges attracts each other for example negative to positive or positive to negative.
It is governed by Coulomb's law how two sets of charges interact. According to the law, two charges held apart will attract or repel one another with a force equal to their product and the square of the distance between them. While items with differing charges attract one another, those with the same charge repel one another.
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