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Simultaneous measurement of the momentum component px

  1. Apr 29, 2015 #1
    1. The problem statement, all variables and given/known data
    The uncertainty in the position of an electron along an x axis is given as 38 pm. What is the least uncertainty in any simultaneous measurement of the momentum component px of this electron?

    2. Relevant equations
    Position uncertainty = h/ delta p (delta p is the uncertainty in the momentum)
    Delta p = (percentage of speed)*Px

    3. The attempt at a solution
    I got the momentum uncetainty to be 1.74*10^-23
  2. jcsd
  3. Apr 30, 2015 #2


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    You use ##\Delta p \Delta x = h##. From what I remember, there is a more strict relationship that may well be the one they want you to use here...
  4. Apr 30, 2015 #3
    Thank you!
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