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... 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

(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

... 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

...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

... 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

...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

...use the following equation to calculate the total current. V = I *

**R**12 = I * 13⅓⅓ I = 0.9 amp In a parallel circuit...3 Answers · Science & Mathematics · 24/07/2019

...current flowing through a resistance with the equation V=IR, you determine

**R**= V/I = 120V/7A = 17.1 Ohms resistance.2 Answers · Science & Mathematics · 31/10/2019

... energy between two charges, in Joules U = kQ₁Q₂/

**r**Q₁ and Q₂ are the charges in coulombs...1 Answers · Science & Mathematics · 28/11/2019

... = 1 C/s 2) resistance = voltage² / power = V²/P

**R**= (110V)² / 1500W = 8.1 Ω Hope this ...1 Answers · Science & Mathematics · 18/03/2019