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  1. ...point at a distance (r) is given by: E = kQ / r² k is the coulomb constant = 8.99×10⁹ N·m²·C⁻² The field is away from a positive point charge and towards a...

    1 Answers · Science & Mathematics · 05/09/2019

  2. ...data are given to 3 sig. figs, we should use the value of ‘k’ to 3 sig. figs. E1 = kq1/d² = 8.99*10^9 * 6.60*10^-9 / 0.350² = 484.36 N/C E2 = kq2/d² = 8.99*10^9 * (-3.10)*10^-9 / 0.155² = -1160...

    2 Answers · Science & Mathematics · 08/08/2019

  3. ...4π(0.10m)² = 5*1.6e-19C solves to E = 7.2e-7 C ◄ Compare that to E = k*Q / r² where k = 1/4πε₀ = 8.99e9 N·m²/C²...

    1 Answers · Science & Mathematics · 12/09/2019

  4. ...surface. So, since flux = E (dot product) A, then flux = 10^3 N/C (4.0 j (dot) k + 3.0 k (dot) k) (pi * R^2). j (dot) k = 0, and k (dot) k = 1, so flux = 10...

    1 Answers · Science & Mathematics · 13/09/2019

  5. The unrounded answer from part a) is 3.2344x10^17 N/C. It's best to use this unrounded value in part b). The force...

    1 Answers · Science & Mathematics · 04/09/2019

  6. ... = Σ kQ/d² = k*[12e/(2d)² - 3e/d²] = k*[3e/d² - 3e/d²] = 0 N/C Of course. q4 has 4x the magnitude and opposite sign of q3 and is...

    1 Answers · Science & Mathematics · 05/09/2019

  7. ...the opposing E fields are equal. Factor out k and 1e-9 -6/x² = -3/(0.6-x)² +6/x² = +3/(0.6-x)²...

    1 Answers · Science & Mathematics · 13/05/2020

  8. ...a v(t) = int(a * dt) = at + C v(0) = 0 v(t) = at s(t) = (1/2) * a * t^2 + C s(0) = 0 s(t) = (1/2) * a * t^2 v(k) = 82.1 s(k) = 2000 82.1 = a * k 2000 = (1/2) * a * k^2 4000 = a * k^2 4000 / 82...

    1 Answers · Science & Mathematics · 18/07/2019

  9. ... the total force acting on a charge q3 = 1.6μC located on the x-axis at x=0.75 m. They...from q₁ F₁ = kq₁q₃/r² = k(4.5µ)(1.6µ) / 0.75² = 9e9(7.2e-12...

    1 Answers · Science & Mathematics · 12/09/2019

  10. ... Q in units of pC. That’s because the ‘k’s will cancel, and the conversion factors for changing pC to C will cancel. (If you prefer, do the calculations in full - the...

    2 Answers · Science & Mathematics · 06/09/2019

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