Not to blow off your response, but our professor specifically asked that we utilized the binomial theorem to write a simpler approximation. Plus we were never taught to apply geometric series to this problem. This is what I did:
K = \frac{1}{{4 \pi \varepsilon_0}
from part (a), (E_{net})_x =...
Homework Statement
I'm having a lot of trouble solving for part b as I am unable to correctly apply the binomial theorem to this approximation. The problem is shown below:
Three point charges are distributed: a positive charge +2Q in the center, and a pair of negative charges -Q, a...