1. The problem statement, all variables and given/known data Two point charges, Q1 = -4.0 μC and Q2 = +3.0 μC, are placed as shown. In Figure 17.14b, the x-component of the electric field, at the origin O, is closest to: A) -3000 N/C B) 3800 N/C C) 9800 N/C D) -3800 N/C E) -9800 N/C 2. Relevant equations kq/r^2 3. The attempt at a solution i understand how to get the magnitude of both forces of Q1 and Q2 by using kq/r^2 i found the hypotenuse to use as the length which is 2.57m . what i'm lost on is the direction vectors that i need multiply the forces by. in relation to Q2 i have found the inverse tangent and the angle comes out to be about 33. but when i multiply it by the force i get and get the difference with the force of Q1 it's not right. any help is much appreciated, this one problem has been giving me trouble for quite some time!