1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: A +12 nC charge is located at the origin

  1. Apr 10, 2009 #1
    A +12 nC charge is located at the origin.

    What are the electric fields at the positions (x,y) = (5.0 cm, 0 cm), (-5.0 cm, 5.0 cm), (-5.0 cm, -5.0 cm)? Write each electric field vector in component form.

    I got the answer for the first one, but I can't figure out how to get the answers for the second and third ones. The answers are suppose to be (-1.53*10^4 i + 1.53*10^4 j) N/C and (-1.53*10^4 i - 1.53*10^4 j) N/C, respectively.

    Thank you!
     
  2. jcsd
  3. Apr 10, 2009 #2

    nicksauce

    User Avatar
    Science Advisor
    Homework Helper

    It's just the same as the first one, except now instead of r=5cm, you have to use the pythagorean theorem to find r.
     
  4. Apr 10, 2009 #3
    I've tried that, but it gives me an answer of 2.16*10^4 N/C , instead of the answer of 1.53*10^4 N/C, and I can't figure out why.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...