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Oscillations typo? (21.79)

  1. Oct 4, 2015 #1
    1. The problem statement, all variables and given/known data
    hi.jpg

    2. Relevant equations
    ##r=0.15-0.05cos(\omega t)## ##\omega = \sqrt {\frac{k}{m}}##
    ##\vec{E}=\frac{Qk}{r^2}##
    3. The attempt at a solution
    In my end result, I got the same thing as above, but with 10^5 in the numerator. According to the solutions guide, the final answer is a simplification of ##\frac{2.7*10^4}{(0.15-0.05cos(13.92t))^2}## Did I make a mistake or did the textbook? Thank you.
     
  2. jcsd
  3. Oct 5, 2015 #2

    NascentOxygen

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    Staff: Mentor

    Hi Calpalned. Is this a problem easily solved in your head, or is there some working that you have forgotten to attach?
     
  4. Oct 5, 2015 #3
    I solved it already, It just want to check if it's 10^5 or 10^7
     
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