You do a simple demonstration for your high school physics teacher in which you

Question

You do a simple demonstration for your high school physics teacher in which you claim to disprove Coulomb's law. You first 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. (a) What is wrong with your assumptions? This answer has not been graded yet. (b) Does attraction between the paper and the comb require that the net charge on the comb be negative? Yes No Explain your answer This answer has not been graded yet

Explanation / Answer

a.However the paper wasn't charged IS wrong, The positive charge induces in light paper pieces and get attracts with coulomb.

b.Yes while rubbing with hair rubber comb gets negative charge by transferring electrons from hair to comb and comb induces opposite positive charge in papers so they get attract.

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