Question

Charge of the second particle help please? Force exerted on particle with 5.0x10^-9 C by second particle that is 4 cm away is 8.4x10^-5 N.

Answer 1

I thought maybe it would be 3.0x10^-9?

Answer 2

do you have the equation for electrical force? or it could be called columbs law?

Answer 3

Correct?

Answer 4

yep! thats the one!

Answer 5

in the problem we are given: F, q1, r. but we don't know q2 and k. k is a constant, do you have that? and q2 is what we are solving for. so once we get k, we can solve for the answer.

Answer 6

@J.Velasquez do you have what k equals in your notes?

Answer 7

I'm not sure if its this one, but I have 8.9 written next to k.

Answer 8

like this
8.9 x 10^9 N • m2 / C2

Answer 9

do you have if figured out, or do you should i walk you through the next step?

Answer 10

@j.velasquez

Answer 11

I think I can solve, but can you just help me on what are the values? >.< Obviously the K is the 8.9 value but I don't know where the other ones fit in. Thanks for your help btw!

Answer 12

sorry, back
so here are the values we have figured out:
F = 8.4x10^-5
k = 8.9 x 10^9
q1 = 5x10^-9
r = 0.04 meters (every time this equation is use, we have to use meters, not cm)
q2 = ? [solve for]

Answer 13

hint, you answer should be between 2.7x10^-9 to 3.5x10^-9

Answer 14

Thank you so much! (:

Answer 15

ur welcome