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Homework Help: Electric field and point charges

  1. Jan 14, 2009 #1
    1. The problem statement, all variables and given/known data
    The question is as seen on the attachment.


    2. Relevant equations
    E = (k)(q)/r^2


    3. The attempt at a solution
    I know that for this question I am supposed to use the equation "E = (k)(q)/r^2" but the question has me kinda confused. Could someone please tell me what my first step should be in finding the charge on q2?
     

    Attached Files:

  2. jcsd
  3. Jan 15, 2009 #2
    Well you have been given all of the variables except for q2 firstly calculate the distance between q2 and p then rearrange the equation to make q the subject
     
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