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Equation Rearrangement

  1. Sep 1, 2010 #1
    1. The problem statement, all variables and given/known data
    so, the question is basically asking me to rearrange F = qE + qvB to find 'v'.

    3. The attempt at a solution
    I'm not the greatest at rearrangements, but here is my attempt.

    F - qvB = qE
    F - v = qE / qB (q values cancel each other out)
    v = (E / B) + F

    is this right, or have i gone wrong somewhere?

    Any help would be much appreciated :)
     
  2. jcsd
  3. Sep 1, 2010 #2

    rock.freak667

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    Let's make things simpler and write:

    qvB=F-qE

    you should understand this (we are making the term we want as the subject)

    Since we don't want the 'q' and 'B' to be by the 'v', what happens if we divide both sides by 'qB'?
     
  4. Sep 1, 2010 #3
    wouldn't you get:
    v = (F - E) / B ?
     
  5. Sep 2, 2010 #4

    rock.freak667

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    There no 'qB' by the 'F', so the 'F' becomes 'F/qB'.
     
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