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Identify which of the ff. object will be positive or negative charge

  1. Aug 15, 2011 #1
    Identify which of the ff. object will be positive or negative charge

    1) Hand and Hair
    2) PVC and Tetlon
    3) Glass and Poly ester
    4) Rubber and rubber
    5) Hand and wood
     
  2. jcsd
  3. Aug 15, 2011 #2

    PeterO

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    What technique is suggested? Look it up in a text book?
     
  4. Aug 15, 2011 #3
    I think Triboelectric series is the reference here. But I do not know what happens when both rubbers are rubbed. Is it possible that they both gain positive charges?
     
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