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  1. focal point (distance from mirror) is: f = r/2 = 10 cm given s = object distance from mirror s' = image distance from mirror...

    1 Answers · Science & Mathematics · 06/08/2019

  2. ...  (d) What is the current through the resistor? I = E/R = 5.8 v / 12.1 Ω = 0.479 A  What is the current through...

    2 Answers · Science & Mathematics · 28/11/2019

  3. (a) intensity = power / area of sphere = P / 4πR² R = 3e8m/s * 3600s/h * 24h/day * 365day/yr * 40.3yr = 3.81e17 m P = 4.00e28 I...

    2 Answers · Science & Mathematics · 27/02/2019

  4. ...relationship between orbital speed and orbit radius in free fall follows from m g(r) = m v^2 / r So v = sqrt( g r) Now g itself also depends...

    7 Answers · Science & Mathematics · 01/01/2020

  5. ... with the spring it goes in simple harmonic motion, derive an ex(p)ression fo(r) the spring constant,k if the spring compresses a distance l (L for clarity...

    2 Answers · Science & Mathematics · 07/08/2019

  6. Ohm's law: V = IR Then, R = V/I Resistance, R = (9.0 V) / (25 × 10⁻³ A) = 360 Ω

    3 Answers · Science & Mathematics · 12/01/2020

  7. ...why. eg When you close the switch would the current instantly become i = V/R or not. Why? You should have the answers to both A and...

    1 Answers · Science & Mathematics · 21/02/2019

  8. ... and m₂ are the masses of the two objects in kg r is the distance in meters between their centers g...

    2 Answers · Science & Mathematics · 01/11/2019

  9. ...from -2q to C = 3 units Potential is V = kq/r. Potentials are scalars. To get total potential we simply...

    3 Answers · Science & Mathematics · 17/02/2019

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