Particle A carrying a 3.0-μC charge is located at y = 3.0 m on the y axis of an xy coordinate system, and particle B carrying a 7.0-μC charge is located at the origin.

Part A

What is the magnitude and direction of the electric force exerted on A?

Enter positive value if the force is in +y direction and negative value if the force is in −y direction.

FBA =

Part B

What is the magnitude and direction of the electric force exerted on B?

Enter positive value if the force is in +y direction and negative value if the force is in −y direction.

FAB =