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  1. cosΘ = adj / hyp = z / √(z²+R²)

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

  2. For z >> R, E = qz / [4πε₀*(z²+R²)^(3/2)] ≈ qz / [4πε₀...

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

  3. ... below the q. Right! • F=m*g • [K|q1||q2|]/r^2=m*g Yep. I'd write it as weight = electrostatic force m*g = ...

    1 Answers · Science & Mathematics · 03/09/2019

  4. The first step is to calculate the vertical and horizontal components of the tennis ball’s initial velocity. Vertical = 59.8 * sin 15 (15.5 m/s) Horizontal = 59.8 * cos 15 (15.8 m/s) During one half of the time, the tennis ball’s vertical velocity...

    3 Answers · Science & Mathematics · 02/09/2019

  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 on charge q in field E is simply F = qE. We can ignore the electron charge's minus sign as we are only...

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

  6. ... in coulombs F is force in newtons r is separation in meters k = 8.99e9 Nm²/C²

    1 Answers · Science & Mathematics · 01/09/2019

  7. ...do need to include the uncertainty from the first part. Volume = 4/3 pi() r^3 Density = mass / volume You can do this by"rule of thumb"...

    1 Answers · Science & Mathematics · 31/08/2019

  8. ... in coulombs F is force in newtons r is separation in meters k = 8.99e9 Nm²/C²

    1 Answers · Science & Mathematics · 31/08/2019

  9. ...net charge of 12 + 5 - 8 = 9 uC. So if al three spheres touch r the same time, all three end up with +3 uC. Part c --> the magitude...

    2 Answers · Science & Mathematics · 31/08/2019

  10. ... in coulombs F is force in newtons r is separation in meters k = 8.99e9 Nm²/C²

    1 Answers · Science & Mathematics · 29/08/2019

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