You do a simple demonstration for your high school physics teacher in which you claim to disprove Coulomb’s law. Youfirst run a rubber comb through your dry hair, then use it to attract tiny neutral pieces of paper on the desk. You then say, “Coulomb’s law states that for there to be electrostatic forces of attraction between two objects, both objects need to be charged. However, the paper was not charged. So according to Coulomb’s law, there should be no electrostatic forces of attraction between them, yet there clearly was.” You rest your case. (b) Does attraction between the paper and the comb require that the net charge on the comb be negative? Explain your answer.
You do a simple demonstration for your high school physics teacher in which you claim to disprove Coulomb’s law. Youfirst run a rubber comb through your dry hair, then use it to attract tiny neutral pieces of paper on the desk. You then say, “Coulomb’s law states that for there to be electrostatic forces of attraction between two objects, both objects need to be charged. However, the paper was not charged. So according to Coulomb’s law, there should be no electrostatic forces of attraction between them, yet there clearly was.” You rest your case.
(b) Does attraction between the paper and the comb require that the net charge on the comb be negative? Explain your answer.
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