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Homework Help: What would be the speed of the charge

  1. Dec 14, 2013 #1
    An area has an electric field of 2.1*10^8N/C and a Mag. field of 0.90T. What would be the speed of the charge have to be to go into the area in order for the electric force on the charge equal the magnetic force on the charge?

    I am unsure how to approach this question ...can someone please help?!
  2. jcsd
  3. Dec 14, 2013 #2

    rude man

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    Is the electric force a function of speed? What is the electric force on the moving carge?

    The magnetic force?
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