In Example 21.4, suppose the point charge on the y-axis at y = -0.30 m has negative

Question:

In Example 21.4, suppose the point charge on the y-axis at y = -0.30 m has negative charge -2.0, µC, and the other charges remain the same. Find the magnitude and direction of the net force on Q. How does your answer differ from that in Example 21.3? Explain the differences.