Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Introductory Physics Homework Help
Find Net Electric Field Between Two Point Charges
Reply to thread
Message
[QUOTE="BvU, post: 4977922, member: 499340"] When it says E(-0.100), does that mean the x value of -0.100, as in a point on the x-axis to the left of q1? (-0.100, 0) -- Yes For your first point, are you saying that it should be (d-x)^2? -- Yes. Better: (x-d)[SUP]2[/SUP] Second point, that the two fractions should instead be added? --- Yes/No: [INDENT]To the right of a charge q/x[SUP]2[/SUP] points to the right To the left of a charge q/x[SUP]2[/SUP] points to the left[/INDENT] To get it in one expression, we often use this notation : ##\vec E(\vec r) = k\; q\; {\displaystyle \vec r\over |\vec r|^3}## q itself also has a sign. In this exercise both q1 and q2 are positive. So [INDENT]x< 0 both point to the left => add and put a minus sign in front 0<x<d q1 to the right, q2 to the left (as in your original relevant equation E(X)=k[(q1/x[SUP]2[/SUP]) - (q2/(d-x)[SUP]2[/SUP])] ) d<x both point to the right => add (so indeed E(X)=k[(q1/x[SUP]2[/SUP]) + (q2/(d-x)[SUP]2[/SUP])] )[/INDENT] Make a drawing ! [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Introductory Physics Homework Help
Find Net Electric Field Between Two Point Charges
Back
Top