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Finding Force of an electron in motion

  1. Feb 11, 2013 #1
    Please help, I keep getting the wrong answer but do not know why. Thanks


    An electron of mass 9.11x10^(-31) kg has an initial speed of 3.24x10^5 m/s. It travels in a straight line, and its speed increases to 6.93x10^5 m/s in a distance of 5.15 cm. Assume its acceleration is constant.

    a. determine the force exerted on the electron.

    b. compare this force with the weight of the electron, which we neglected.
     
  2. jcsd
  3. Feb 11, 2013 #2
    Hi mrye33!

    Could you show us what you've already done.
     
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