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Atoms and quantum physics problem

  1. Apr 19, 2013 #1
    a. Find the deBroglie wavelength of an electron traveling at 2*10^6 m/sec.
    b. Does this length come close to any familiar dimensions? Explain

    For part a. I did
    =(6.626*10^-34 J sec)/(9.11*10^-31 kg*2*10^6 m/sec)
    = 3.64*10^-10 meters

    I have the first one but I did not understand the second part.
    Could someone please help me with this?
  2. jcsd
  3. Apr 19, 2013 #2


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    Do you know some structure with a size of roughly 3.64*10^(-10) meters?
    10^(-10)m even has a special name due to its importance.
  4. Apr 19, 2013 #3
    I dont have any idea about the structure roughly to taht size but I know 10^-10 is 1 Armstrong
  5. Apr 19, 2013 #4


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    And where is that unit used?
    (did you really need help to get that question?)
  6. Apr 19, 2013 #5


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  7. Apr 20, 2013 #6


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    Had it been Armstrong, it must have been full of drugs, so much greater than 10-10m.
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