step one, draw the question. apply principle of superposition; consider one charge at a time, then sum individual forces.
Part A
think about which force vectors are going to cancel at the origin.
Part B
use the result from part A :D
Part C
is pretty vanilla. opposites attract.
I'm going to parasite on this thread, because it deals with a similar topic.
the way i approached it was use the electric field equation,
E = \frac{1}{4\piε} \int \frac{1}{|r|^2} \widehat{r}dq
for which i substituted \widehat{r} = cosψ = \frac{z - Rcos\theta}{r} and for |r| =...
That's what i figures too after some digging in the kinetics section of my chem book
cheers.
i still don't get what <x^2> means. What i found was "the average of the square of molecular speeds" but i still don't entirely get why its operator is X^2.
edit: Also is there a ways to...
Every quantum mechanical operator has an observable in classical mechanics
<x> - position
...
<x^2> - ?
<p^2> - ?
What is the meaning on these expectation values?
v^2 = <x^2> - <x>^2
What is the meaning of this? edit: It looks to me like uncertainty in position. Is it the average...