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Physics 11 Online
OpenStudy (anonymous):

why do positrive and negative charges attract each other

OpenStudy (anonymous):

ah,that's a question for the universe. when physicists knew there are two kinds of things,which repell if they are the same kind and attract if they are different,physicists decided to give notations(one for positive and other for negative)

OpenStudy (anonymous):

So,I think the answer is "that's how the universe works"

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