Three charges exist under the following conditions q1 23 x

Question

Solve the all parts of following problem given below:

Problem: Three charges exist under the following conditions: q1 = 2.3 x 10^-6 C, q2 = -1.7 x 10^-6 C, q3 = -3.4 x 10^-6 C, r12 = 0.13 m and r23 = 0.35 m.

Part A: What direction is the electric field that q3 'feels' due to q1?

Part B:  What is the direction of the electric field that q3 'feels' due to q2?

Part C:  What is the magnitude of the electric field that q3 'feels' due to q1?

Part D:  What is the magnitude of the electric field that q3 'feels' due to q2?

Part E:  What is the magnitude and direction of the total electric field that q3 'feels'?

Any help I can get on this problem is greatly appreciated! I'm not too familiar with this problem.