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Homework Help: A simple physics 12 question

  1. Jun 6, 2004 #1
    I don't know if this is the place to post this, but This is a simple Grade 12 Physics question that I have been working on for about half an hour now.

    For those who don't normally use this notation,
    2E10 = 2X10^10.
    2E-2 = 2X10^-2

    "A magnetic field of 3.4E-3T deflects electrons into a circular path of radius .014m. The electorns have been accelerated through a potential differenc eof 250V. If the charge of an electron is 1.6E-19C, what is the mass of the electron?"

    I have done it three times, and I keep getting 7.25E-31Kg when in actuality, a real electron is 9.11E-31Kg
     
    Last edited: Jun 6, 2004
  2. jcsd
  3. Jun 6, 2004 #2

    chroot

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    Do you really mean 3,400 tesla? I doubt it.

    - Warren
     
  4. Jun 6, 2004 #3
    sorry.. i'd make that 3.4E-3T
    (.0034)
     
  5. Jun 6, 2004 #4

    chroot

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  6. Jun 6, 2004 #5
    I did this question from a worksheet, and we both got identical answers.

    If you have the same answer that my friend and I do, then chances are it is correct.

    Thanks for your help!
     
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