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Cant understand this line in the book(semiconductor nightmare 4)

  1. Mar 20, 2010 #1
    in the marked red line
    how they comeup with the fact the the velocity increases by this amount
    i didnt see this expression before in this book
  2. jcsd
  3. Mar 20, 2010 #2


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    Hi nhrock3! :smile:

    F = ma = m(dv/dt) …

    In this case, F = qE = -eE, so m(dv/dt) = qE, so ∆v = -eEt/m. :wink:
  4. Mar 20, 2010 #3
    thanks :)
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