Coulomb's Law Quiz
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Questions and Answers

What does Equation (1.3) in the text represent?

  • The gravitational force between two stationary point masses
  • The magnetic force between moving charges
  • The electrostatic force between two point charges (correct)
  • The electric field between two point charges
  • What is the relationship between the forces F12 and F21 according to Coulomb's law?

  • F12 = -2F21
  • F12 = -F21 (correct)
  • F12 = 2F21
  • F12 = F21
  • Which law does Coulomb's law agree with according to the text?

  • Newton's third law (correct)
  • Newton's second law
  • Newton's first law
  • Law of conservation of energy
  • What kind of dependence on distance do both Coulomb's law and Newton's law exhibit?

    <p>Inverse-square dependence</p> Signup and view all the answers

    What is the electric force between an electron and a proton at a distance r apart?

    <p>$\frac{1}{4 \pi \varepsilon_0} \cdot \frac{e^2}{r^2}$</p> Signup and view all the answers

    What is the corresponding gravitational force between an electron and a proton at a distance r apart?

    <p>$-Gm_em_p/r^2$</p> Signup and view all the answers

    What does the negative sign in the electric force equation between an electron and a proton indicate?

    <p>The force has an attractive nature</p> Signup and view all the answers

    How does Coulomb's law compare with Gauss's law in terms of describing electric fields?

    <p>Coulomb's law applies only to point charges, while Gauss's law applies to any charge distribution.</p> Signup and view all the answers

    What does the inverse-square dependence on distance signify in both Coulomb's and Newton's laws?

    <p>$F$ decreases with the square of the distance from the source of the field.</p> Signup and view all the answers

    What are the masses of a proton and an electron as provided in the text?

    <p>$9.11 \times 10^{-31}$ kg and $1.67 \times 10^{-27}$ kg respectively</p> Signup and view all the answers

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