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Homework Help: Magnetic problem. please help

  1. Aug 16, 2010 #1
    1. The problem statement, all variables and given/known data

    the charge of Q= 1.6 uC is moving along the line x=y with speed v= 4.0*10^5 m/s. What is the vecotr force it experiences due to the magnetic field B= Boz, where Bo = 0.25T?

    2. Relevant equations



    3. The attempt at a solution

    i know Fb must be perpendicular to B and B is on the z axis. but i don't know what should i do afterwards. please help.
     
  2. jcsd
  3. Aug 16, 2010 #2
    You just need to use the Lorentz force.

    [tex]\vec{F}=q(\vec{E}+\vec{v}\times\vec{B})[/tex]

    Remember, [itex]\vec{E}[/itex] and [itex]\vec{B}[/itex] are the fields not produced by charge [itex]q[/itex].
     
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