5. 0/4 points I Previous Answers SerPSE9 23.P.030.WI Three charged particles are

Question

5. 0/4 points I Previous Answers SerPSE9 23.P.030.WI Three charged particles are at the corners of an equilateral triangle as shown in the figure below. (Let q 4.00 uC, and L 0.400 m.) 7.00 PwC 60.0 4.00 AC (a) Calculate the electric field at the position of charge q due to the 7.00-HC and -4.00-HC charges. Once you calculate the magnitude of the field contribution from each charge you need to add these as vectors. kN/C Does the -4.00-HC charge contribute to the y component of the field at the origin? kN/Oj (b) Use your answer to part (a) to determine the force on charge q. mN j

Explanation / Answer

a) E1 = 9*10^9*7*10^-6/0.4^2 = 3.94*10^5 N/C

E2 = 9*10^9*4*10^-6/0.4^2 = 2.25*10^5 N/C

E = SQRT(E1^2+E2^2+2E1E2COS120) = 3.424*10^5 N/C

B) F = QE = 4*10^-6*3.424*10^5 = 1.37 N

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