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Homework Help: Range of speeds of particle confined in box

  1. Apr 28, 2010 #1
    1. A proton is confined within an atomic nucleus of diameter 3.80 fm. Estimate the smallest range of speeds you might find for a proton in the nucleus.

    2. Uncertainty Principle

    3. 3.80fm * mv = h/2

    Soliving for h, using mass of proton = 1.67*10-27kg, I obtain v = 5.22*107
    . Then, dividing by two I obtain a final answer:

    0 less than/equal to v less than/equal to 2.6*107

    Is this correct?
  2. jcsd
  3. Apr 28, 2010 #2
    That is how I would set it up. I got a different answer though. You are using h-bar not h right?
  4. Apr 29, 2010 #3
    Why h-bar? The uncertainty principle is delta(x)delta(p) greater than/equal to h/2
  5. Apr 29, 2010 #4
  6. May 3, 2010 #5
    any luck with this question? I have the same question with different values am not sure how to approach it
  7. May 3, 2010 #6
    Op set it up right he just used h instead of h-bar.
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