Will fan and Medal!!! so stuck on this.

Four charges are placed at the four corners of a square of side 15 cm. The charges on the upper left and right corners are +3 µC and -6 µC respectively. The charges on the lower left and right corners are -2.4 µC and -9 µC respectively. The net electric force on -6 µC charge is:
25 N, 780 above the -ve x- axis

25 N, 780 below the -ve x- axis

13 N, 310 below the +ve x- axis

18 N, 750 above the +ve x- axis

Question

Will fan and Medal!!! so stuck on this.

Four charges are placed at the four corners of a square of side 15 cm. The charges on the upper left and right corners are +3 µC and -6 µC respectively. The charges on the lower left and right corners are -2.4 µC and -9 µC respectively. The net electric force on -6 µC charge is: 
25 N, 780 above the -ve x- axis
	
25 N, 780 below the -ve x- axis
	
13 N, 310 below the +ve x- axis
	
18 N, 750 above the +ve x- axis

anonymous · Answer

@ijlal

anonymous · Answer

@AloneS 
@airjordan200 
@ajprincess

anonymous · Answer

Please anyone

ijlal · Answer

Sorry pal ! don't know this one :/