Plastic comb run through one’s dry hair attracts small bits of paper.Why? What happens if the hair is wet or it is raining?
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because of the electrostatic force..
Ajaylikeselectronic:
please elaborate.. we know because of electrostatic, but how does it work?
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Answer:
Explanation:
when the comb runs through dry hair , it gets charged by friction . the molecules in the paper get polarized by the charged comb, resulting in a net force of attraction . if the hair is wet , or if it is rainy day, friction between hair and the comb reduces . the comb does not get charged and thus it will not attract small bits of paper
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