Compute all parts of given question:
Question: There is a point charge q1 = + 10 µC, located at the origin of a coordinate system, and a second charge q2 = + 40 µC, located at x = 6.0 m, away.
Part A: Where does the electric field due to the charges vanish?
Part B: Sketch the electric field lines.
Part C: How much energy was needed to bring these charges together to where they are (assume they were originally separated by an innite distance)?
If possible just a brief explanation how you got the answer?