Three point charges are located at the corners of an equilateral triangle as in

Question

Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 1.35 mu C charge. (Let A = 1.35 mu C, B = 6.70 mu C, and C = -4.24 mu C.) magnitude 119.56 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. N direction 50.74 Your response differs from the correct answer by more than 10%. Double check your calculation, below the +x-axis

Explanation / Answer

X-component

Fx=FC,x+FB,x=K|QA||QC|/rAC2-(K|QA||QB|/rAB2)cos60

Fx=(9*109)(1.35*10-6)[4.24/0.52 -(6.7/0.52)cos60]*10-6=0.04325 N

Y-component

FY=-K|QA||QB|/rAB2sin60=[-(9*109)(1.35*10-6)(6.7*10-6)/0.52]sin60

FY=-0.282 N

Magnitude

|F|=sqrt[0.043252+(-0.282)2]=0.2853 N

direction

o=tan-1(-0.282/0.04325)=-81.280

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