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Coulomb's Law quiz help

  1. Feb 27, 2005 #1
    I was wondering if anyone would be willing to walk me through a few problems to help prepare me for a quiz tomorrow over Coulomb's law. It'd be of great appreciation if anyone would/could help me!

    The first problem:
    Betelgeuse, one of the brightest stars in the constellation of Orion, has a diameter of 7.0 x 10 ^11 m. Consider two compact clouds w/ opposite charge equal to 1.0 x 10 ^5 C. If these clouds are located 7.0 x 10^11m apart, what is the magnitude of the electric force of attraction between them?
  2. jcsd
  3. Feb 27, 2005 #2
    Try using the formual
    [tex]K=8.93\cdot10^9 \frac{Nm^2}{C^2}[/tex]
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