anonymous
  • anonymous
The charges on two metallic balls are 5.0 and 7.0 coulombs respectively. They are kept 1.2 meters apart. What is the force of interaction between the two? (k = 9.0 * 10© newton·metersÆ/coulombÆ) A. 2.2 x10^11 newtons B 4.1 x 10^-7 newtons C. 5.0 x 10^11 newtons D. 7.0 x 1-^-7 newtons
Physics
schrodinger
  • schrodinger
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anonymous
  • anonymous
rvc
  • rvc
\[F=\frac{ 1 }{ 4 \pi \epsilon k }\frac{ Q_1O_2 }{ r^2 }\]
anonymous
  • anonymous
i dont know how to plug that in.... @rvc

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anonymous
  • anonymous
i dont get coulombs law or whatever this is
rvc
  • rvc
Q_1=5C Q2=7C r=1.2m
anonymous
  • anonymous
so would it be A? @rvc
anonymous
  • anonymous
it is A, thank you that really helped! @rvc

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