• Support PF! Buy your school textbooks, materials and every day products Here!

Electric Forces between three charges

  • Thread starter thst1003
  • Start date
  • #1
18
0
17-p-009-alt.gif


An electron is near a positive ion of charge +9e and a negative ion of charge −8e (see the figure below). (Take a = 5.23 µm, b = 4.28 µm, and θ = 54.9°.)

(a) Find the magnitude and direction of the resultant force on the electron. (Let right be the +x-direction. Measure the angle counter-clockwise from the +x-axis.)

F = k(q x q/r^2)


I tried using this equation and then finally doing vector addition and I got an answer of: 2.235e-16 N and this was wrong.
 

Answers and Replies

  • #2
1,254
3
Then I guess you used the equation or did the vector addition wrong....

Care to show some of your work?
 
  • #3
18
0
Thanks! I actually was using my calculator in the incorrect mode. I figure it out. I really appreciate it.
 

Related Threads on Electric Forces between three charges

Replies
4
Views
1K
Replies
3
Views
4K
Replies
0
Views
2K
Replies
2
Views
1K
  • Last Post
Replies
4
Views
9K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
1
Views
5K
  • Last Post
Replies
4
Views
6K
Replies
4
Views
4K
Replies
8
Views
8K
Top