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What am I doing wrongly?

  1. Nov 18, 2009 #1
    a.jpg
    b.jpg

    % change E = .0022 - (-.0022) = .0044

    [(E1 - E0)/E0] * 100% = % change E

    [(E1 - E0)/100] * 100% = % change E

    E1 - E0 = change E

    E1 = change E + E0 = .0044 + 100 = 100.0044

    Originally, I got like 100.44. The professor said I was off by a factor of 10, i.e. E1 = 104.4.
     
    Last edited: Nov 18, 2009
  2. jcsd
  3. Nov 18, 2009 #2
    Your answer for #1 is already off by a factor of 10.

    You calculation for #2 also has another error and it has the wrong sign.

    for #3, only % [itex] \Delta [/itex]E was asked. Amazingly enough,
    the answer you got was actually correct even tough #1 and #2 were wrong

    If you want further help, try to give a more detailed calculation.
     
  4. Nov 18, 2009 #3
    Okay. I'm home now. Here's my work.

    Refer first post.
     
    Last edited: Nov 18, 2009
  5. Nov 18, 2009 #4
    I see just a repeat of the question
     
  6. Nov 18, 2009 #5
    You may have to clear the browser.
     
  7. Nov 18, 2009 #6
    I must be going crazy, because I don't see how I'm calculating #1 and #2 incorrectly!
     
  8. Nov 18, 2009 #7
    it didn't help. You link to 2 jpeg files that contain parts of the question
     
  9. Nov 18, 2009 #8
    Try it again! I renamed them.
     
  10. Nov 18, 2009 #9
    No one? It's due tomorrow. :-/
     
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