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Homework Help: Momentum & position

  1. Apr 9, 2008 #1
    Is it possible to know both the y-coordinate and the momentum in the x-direction at the same time?

    (I know that you can not know the x-coordinate and the momentum in the x-direction, but i'm not sure about y-coordinate)
  2. jcsd
  3. Apr 9, 2008 #2


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    Yes, because those operators commute.
  4. Apr 9, 2008 #3
    Yes you can.
  5. Apr 9, 2008 #4
    ok that's what, just want to check....thanks
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