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Focal length?

  1. Apr 1, 2016 #1
    Struggling...but willing. Conceptual Physics.:bike:
  2. jcsd
  3. Apr 1, 2016 #2


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    Staff: Mentor

    Welcome to the PF :smile:

    If you have technical questions, post in the appropriate sub-forum and post as much information as you know. That would include links to any reading you have been doing, and your thoughts on anything that is confusing you.

    If your question is about schoolwork, it goes in the Homework Help forums, and you fill out the Homework Help Template that you are provided there. :smile:
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