Anyone know how to solve this?? :(

A thundercloud has an electric charge of 43.2 C near the top of the cloud and -38.7 C near the bottom of the cloud. The magnitude of the electric force between these two charges is 3.95 x 10^6 N. What is the average separation between these charges? (kc = 8.99 x 10^9 N * m^2/C^2)

Question

Anyone know how to solve this?? :(

A thundercloud has an electric charge of 43.2 C near the top of the cloud and -38.7 C near the bottom of the cloud. The magnitude of the electric force between these two charges is 3.95 x 10^6 N. What is the average separation between these charges? (kc = 8.99 x 10^9 N * m^2/C^2)

anonymous · Answer

@ParthKohli @TheSmartOne @sm1th @sleepyjess @aaronq Anyone?

anonymous · Answer

@matt101 @shamim

matt101 · Answer

You can solve this by plugging the values from the question using Coulomb's Law:

$$F={k_Cq_1q_2 \over r^2}$$
Solving for r will give you the answer you need!

anonymous · Answer

Ok. So what should i plug into where?

matt101 · Answer

F is force, k(c) is Coulomb's constant, q(1) and q(2) are your two charges, and r is the distance between those charges.

anonymous · Answer

Ok so to get r alone, i take the k(c)q1q2 and multiply that by both sides to get r^2 = F*k(c)q1q2?

matt101 · Answer

No - you'll want to swap positions of F and r^2.

Multiply both sides by r^2 to get rid of the denominator on the right side. Then divide both sides by F to isolate r^2.