Q- Two positive, 1 nC charges are located on the x-axis. Charge Q₁ is located at the origin and charge Q₂ is located at (4,0) which is 4 cm from the origin.

(a) Calculate the magnitude and direction of the force experienced by Q₂ due to Q₁. 

(b) A third charge Q₃ of 2 nC is positioned on the y-axis at (0,4) which is 4 cm from the origin. Calculate the magnitude and direction of the total force on Q₂ due to both Q₁ and Q₃.

Solution: