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  1. The field points up (toward the negative plate), so for the object to be in equilibrium it must have lost electrons (have a positive charge). The weight is equal to the electrostatic force: mg = qE = (n*e)V/x 5.6e-12 * 9.81 = n * 1.6e-19 * 1910 / 0.00375 n = 674 electrons lost

    2 Answers · Science & Mathematics · 13/09/2020

  2. ...useful Gaussian surface) divided by the area and by the permittivity of space : E = Q / ε₀*A where ε₀ = 8.85e-12 C²...

    1 Answers · Science & Mathematics · 09/09/2020

  3. (a) Anywhere inside the cell the electric field is zero, since any Gaussian surface inside the cell encloses a charge of zero. (b) Just inside the surface -- still zero. (c) field E = q / (4πε₀r²) For q = -2.55e-12 C and r = ½*6.03...

    1 Answers · Science & Mathematics · 08/09/2020

  4. ...t hear it. Light (one type of electromagntic wave) can travel through the vacuum of space , but sound can't.

    2 Answers · Science & Mathematics · 26/08/2020

  5. ...extent for one but not the other. Essentially, a lorentz rotation of time and space cannot equal or exceed the speed of light which certainly limits the amount...

    3 Answers · Science & Mathematics · 13/09/2020

  6. ...can pack more channels into the same frequency band.  And because they can space out channels better with more channels you do not have the...

    2 Answers · Science & Mathematics · 04/09/2020

  7. (a) By F = qE =>E = F/q = (35 x 10^-6)/(20 x 10^-6) = 1.75 N/C (due East) (b) By F = qE =>E = F/q = (35 x 10^-6)/(15 x 10^-6) = 2.33 N/C (due East)

    1 Answers · Science & Mathematics · 26/08/2020

  8. Yes, time exists and is real. The chemical reactions of your metabolism and the electrical signals in your nervous system and brain require time to happen.  The Universe is evolving. The...

    16 Answers · Science & Mathematics · 19/08/2020

  9. The covered space is the area of the triangle ABC (not to scale) ; h is the top speed...

    3 Answers · Science & Mathematics · 13/08/2020

  10. ... Newton's first law.  Approximated by a space ship.  The only way we know to accelerate that ship ( or to brake it) is...

    3 Answers · Science & Mathematics · 09/08/2020

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