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I IOAA 2nd problems: universe expansion

  1. Aug 3, 2017 #1
    upload_2017-8-3_20-33-18.png
    Could anyone please guide me how to do these problems?
     
  2. jcsd
  3. Aug 3, 2017 #2

    PeterDonis

    Staff: Mentor

    Please post each problem individually in the homework forum, using the homework template. That will require you to make some effort to solve them yourself.
     
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