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2 Questions in Physics

  1. Feb 14, 2006 #1
    I got these 2 questions for homework and i can't figure them out.

    Number 1 is With only a metre-stick, a piece of paper and the knowledge that the sun is 1.50 x 10^11m from the earth, how can one estimate the suns diameter.

    Number 2 is You can watch the sun set and disappear over a calm ocean while you lie on the beach, then once again if u stand up. Determine an approximate value of the earths radius. Measuring the time between the 2 sun sets.

    If anyone can help i would be so thankful!!
  2. jcsd
  3. Feb 14, 2006 #2


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    Homework Helper

    You're supposed to show some of your work before anyone can help.
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