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  1. The answer is D K = 40 N/m change cm to meters .4 N to .01 m divide N by m .4/.01=40 N/m

    1 Answers · Science & Mathematics · 07/04/2021

  2. Coulomb: Fe = kQq / d² where k = 1/4πε₀ = 8.99e9 N·m²/C² Newton: Fg...

    1 Answers · Science & Mathematics · 23/03/2021

  3. F = k q1 * q2 / r^2; (Coulomb's force. Centripetal force). F = m v^2 / r; (Centripetal force). q1 =+ 2 * 1.6 * 10^-19 C ; The ion has a charge of + 2 because 1 proton of the nucleus is...

    2 Answers · Science & Mathematics · 01/04/2021

  4. T^2 = k * L T'^2 = k *2L T'/T = √2  T' = T√2 

    1 Answers · Science & Mathematics · 15/04/2021

  5. ... For Q = q, we rearrange to get Q = d*√(F/ k ) = 0.45m * √(2.2e5N / 8.99e9N·m²/C²) Q = 2.2e-3 C or 2.2 mC ◄ But that's quite a bit of force between two ...

    1 Answers · Science & Mathematics · 27/03/2021

  6. gravity on Earth = g = k *M/R^2 T = k /√g gravity on planet g' = k *4M/(4^2*R^2) = k *M/4R^2 = g/4 T' = k /√g' = k /((1/2)*√g) = 2k/√g = 2T

    1 Answers · Science & Mathematics · 16/04/2021

  7. ... right field due to right chargeE = kQ/r² = k (8.1e-3) / 2² = 0.002025k  pointed left net is sum, which is 0.000286k or 2575000 N/ C pointed right F = 2575000 N/ C x 0.0064 C = 16480...

    1 Answers · Science & Mathematics · 01/04/2021

  8. ...charge of (-18 + 12)x10^-9 C = -6x10^-9 C so each sphere will have -3x10^6 C on it.  Then F' = k *Q^2/x^2 = 9 x 10^-7 N  --> this number is positive...

    2 Answers · Science & Mathematics · 26/03/2021

  9. ... = L₀(1 + α∆T) linear thermal expansion coef Al 23.1e-6 / K Nickel 13.0e-6 / K ∆La = 5(23.1e-6)(50) = 0.005775 m...

    1 Answers · Science & Mathematics · 26/03/2021

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