Help for Electromagnetism

  • Thread starter mateoguapo327
  • Start date

mateoguapo327

help! I need help with this homework problem.

--A line of positive charge is formed into a semicircle of radius R=60.0 cm. The charge per unit length along the semicircle is described by the expression [lamb]= [lamb]naught cos [the] . The total charge on the semicircle is 12.0 microcoulombs. Calculate the total force on a charge 3.00 microcoulombs at the center of curvature.--

The figure shows the semicircle with is center at the origin going from 0 to pi. [the] is the angle formed by dragging R clockwise from the positive y axis.

the answer in the book is -0.707Nj and I got -0.526N. Can someone please help me figure out how to properly go about solving this problem?
 
I know you're new here and all....

but shouldn't this go in the homework help section? you might get a better response there.
 

Related Threads for: Help for Electromagnetism

  • Posted
Replies
1
Views
406
  • Posted
Replies
1
Views
1K
  • Posted
Replies
7
Views
4K
Replies
3
Views
4K
Replies
3
Views
2K
Replies
3
Views
2K
Replies
1
Views
5K
Replies
6
Views
2K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top