Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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]F=K\frac{q_{1}q_{2}}{d^2}[/tex]
    [tex]K=8.93\cdot10^9 \frac{Nm^2}{C^2}[/tex]
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook