Question

need help fast. A charge Q = - 834 nC is uniformly distributed on a ring of 2.2 m radius. A charge q=+508 nC is placed at the center of the ring. Points A and B are located on the axis of the ring, as shown. In Figure, the work in eV (as a whole number) done by an external force that transports an electron from B to A is:

Answer 1

https://myasucourses.asu.edu/courses/1/2015SpringA-X-PHY132-19571/assessment/a428d1b336234f0182feb0595414e2a8/PHY%20132%20Electr%20field%20II%202b.png

Answer 2

i have the equation E=dq/z^2-kQz/(z^2+r^2)^(3/2) and i have my little q as 508*10^-9, Q as -834*10^-9, r=2.2, but i can't figure out what my z will be. is it the length of the whole line? so lost.

Answer 3

use math wat in the future good program :)

Answer 4

math way i mean

Answer 5

Your link requires a log in

Answer 6

ok. let me draw it.

Answer 7

here, @iambatman

Answer 8

@ganeshie8 ???? please....i failed this quiz the first time around and he reopened it cause the whole class failed and it's due tonight and i can't figure out any of the three questions....i'm so lost and i'm about to have a nervous breakdown after getting a 0 the first time around

Answer 9

the ta told me i had my setup right, but my distances wrong. he didn't help me beyond that....

Answer 10

not so sure, i found a similar problem see if it helps
http://gyazo.com/1dd3b23fe8eb7d1a03efabf5b35533de

Answer 11

i went to the tutor center and the physicists break room and had about 10 of them all arguing over how to do it right, so i'm just gonna take the F cause this is getting ridiculous.