Posted by Mischa on Wednesday, April 11, 2007 at 7:25pm.
Three point charges, q1, q2, and q3, lie along the xaxis at x=0, x=3 cm, and x=5 cm, respectively. Calculate the magnitude and direction of the electric force on each of the three points when q1=+6.0 muC, q2=+1.5 muC, and q3=2.0 muC.
I would add the forces. Watch direction. Draw a figure, label the directions (like charges repel, unlike attract) at each point. That way, you wont get the signs wrong.
Example: at q2, the right charge pulls the q2 to right (call that positive), and the left charge repels it to the right (again positive) so in this case the forces add to the right.

physics  hugz, Sunday, October 20, 2013 at 10:11pm
p00p
Answer This Question
Related Questions
 Physics  The Superpostion Principle: Three point charges q1, q2 and q3 like ...
 physics check  1. three point charges, q1, q2, q3, lie along the xaxis at x...
 why doesn't anybody ever help me.  1. three point charges, q1, q2, q3, lie ...
 physics  Three point charges, +6.0 µC, +1.7 µC, and −2.3 µC, lie along ...
 physics  Three point charges, +6.0 µC, +1.7 µC, and −2.3 µC, lie along ...
 physics  Three point charges, +6.0 µC, +1.7 µC, and −2.3 µC, lie along ...
 physics  Three point charges, +6.5 ¦ÌC, +1.4 ¦ÌC, and −3.9 ¦ÌC, lie along...
 Physics  The figure below shows two pint charges, each of 2Q, fixed on the y...
 physics  Three point charges, +6.5 μC, +1.8 μC, and −3.4 μ...
 physics  Three point charges are fixed in place in a right triangle. What is ...
More Related Questions