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... in the position b for a long time, the current through

**R**becomes close to zero. TRUE, cap blocks... a long time in the position b, the current through**R**is E/**R**. TRUE initial charge on...1 Answers · Science & Mathematics · 13/03/2019

(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

...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

...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

Uhhhhhhhh Magnetic force = centripetal force? Bvq = mv^2 /

**r**v = rBq / m**r**= 5.1×10^-4 m 2. If I is "the...1 Answers · Science & Mathematics · 12/02/2019

...equilateral triangles. Distance of each mass to axis (centre)

**r**= 2m. Moment of inertia of each mass = mr² = 1 * 2² = 4 ...5 Answers · Science & Mathematics · 28/01/2019

... gravitational force. Weight = m * g Fg = G * M * m ÷

**r**^2 m * g = G * M * m ÷**r**^2 g = G * M ÷**r**^2 G...1 Answers · Science & Mathematics · 22/12/2018

...’s diagonal, d = √(0.500² + 0.500²) The distance (

**r**) from any corner-charge to the centre point is half the diagonal. We...2 Answers · Science & Mathematics · 16/01/2019

Ktrans = 1/2 m v^2 Krot = 1/5 m

**R**^2 w^2 Pure rolling => w = v/**R**Krot = 1/5 m v^2 Ktrans/Krot = 1/2 / (1/5) = 5/2 = 2.5, independent of the speed. => Answer E.2 Answers · Science & Mathematics · 17/11/2018

...ω₂ (you did ask for how, not for the solution) ω = V/

**r**ω is angular velocity in radians/sec 1 radian/sec = 9.55 rev...3 Answers · Science & Mathematics · 14/11/2018