Posted by **yanis** on Thursday, February 14, 2013 at 10:15am.

charge q1=+4.00nc is located at x=0.200m, and q2 =+5.00nc is at x=-0.300 m. what are the magnitude and directionof the net force exerted by these two charges ona negative point charge q3 = -0.600 nc placed at the origin ?

I think I need to find the F of q1q3 then find the F of q2q3

F1 of q1q3 is -5.394*10^-6

F2 of q2q3 is 2.99*10^-6

so, the total F = -5.39*10^-6 + 2.99*10^-6

total F = -2.40*10^-6N

the answer is

the magnitude is -2.40*10^-6N

the direction is -x direction

Is it the right answer ? I need help