- #1
grandpa2390
- 474
- 14
Homework Statement
As always, I wish I were allowed to upload a drawing ;)
This is not a problem, this is a derivation of sorts, so I don't have any numbers.
I have 3 points. one at the origin, a point charge q and a test charge Q
I have a vector from the origin to the point charge q with a magnitude of r' (there was a button for tutorial on typing math, I don't see it).
I have a vector from the origin to the test charge Q with a magnitude of r
the magnitude of the separation vector (vector connecting the point charge with the test charge) is given as ##r - r'##
Homework Equations
##π = r-r'##
script r that is the vector connecting q and Q
The Attempt at a Solution
it isn't a problem, it is just a question. I would think t would be some trig function and we would need angles and so forth to calculate this magnitude, but it is just ##r-r'##. If the angle between r and r' were 90 degree (not possible in this case, but I am just giving an example), I would expect the magnitude of π to be the square root of ##\sqrt{r^2+r'^2}##
once again I am sorry for not using the math code, I can't find that button that gave the tutorial. I know a link to it is somewhere on this page (or used to be) but it is eluding me at the moment.
edit I just found the link to the LaTex tutorial (of course I would find it after posting), I am editing it right now. I knew it was right there, but perhaps it wasn't while I was creating the thread.
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