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Homework Help: I need a step by step for this problem dealing with charges.

  1. Nov 24, 2011 #1
    1. The problem statement, all variables and given/known data
    There are two balloons of charges +3.37mC and -8.21mC. The distance between the two balloons is 2.00m. Determine the force between the two balloons.


    2. Relevant equations



    3. The attempt at a solution
    Here’s my work:

    (9.0×10^9Nm^2/C^2)((3.37mC)(8.21mC)/(2.00m)^2)

    3.37*8.21=27.6677

    2.00^2=4.00

    27.6677/4.00=6.916925

    6.916925*9.00×10^9=62.252325×10^9=6.2×10^10

    It's not right though. The right answer is 0.0627 N
     
  2. jcsd
  3. Nov 24, 2011 #2
    Check the units you've used for the charge of the balloons.
     
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