- #1
arturo
- 18
- 1
Homework Statement
Homework Equations
dE= k dq/r2
The Attempt at a Solution
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I started off taking a derivative of q(x).
dq = -qo/l ⋅ e-x/ldx
Then, I decided that r was the distance x along the rod + .02m. r=(.02+x)
Following that, I plugged everything into the formula:
dE = k⋅qo/l ∫0∞ e-x/l / (.02 + x)dx
Integrating that I resulted in:
E = -kqo/l ⋅(-e0/(.02)2)
E = kqo/l(.02)2
Plugging in values leaves me with 2.3*109 N/C, which is incorrect. I'm not quite sure where I am going wrong here, any advice or clues to lead me in the right direction would be appreciated!
Thanks!