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I What is the length described in surface tension?

  1. Dec 29, 2016 #1
  2. jcsd
  3. Dec 29, 2016 #2

    Vanadium 50

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    πr2 is not a length. That may be the source of the confusion.
     
  4. Dec 29, 2016 #3
    Sorry I meant 2pir. Specifically the term σcosθ(2pir).
     
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