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Electricffiledcalcuate escape speed

  1. Jun 3, 2010 #1
    electricffiled..calcuate escape speed!! urgent plz help

    1. The problem statement, all variables and given/known data

    2zsy58g.jpg

    2. Relevant equations

    ke=1/2mv^2
    Ue=Eqs
    E=kq/r^2

    3. The attempt at a solution
    Uf+kf=Ki+Ui

    Uf=0 and Kf=0

    so -Ui=Ki
    Eqs=1/2(mv^2)

    v=(sEqs/m)^1/2 after this no clue i got lost help plz
     
    Last edited: Jun 3, 2010
  2. jcsd
  3. Jun 3, 2010 #2
    Re: electricffiled..calcuate escape speed!! urgent plz help

    sry guys is the answer 2.3x10^6m/s
     
  4. Jun 3, 2010 #3

    ehild

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    Homework Helper
    Gold Member

    Re: electricffiled..calcuate escape speed!! urgent plz help

    Yes, it is.

    ehild
     
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