Three charged particles are at the corners of an equilateral triangle as shown in the figure below. (Let q = 4.00 µC, and L = 0.750 m.) Three charged particles lie in the x y coordinate plane at the vertices of an equilateral triangle with side length L. Positive charge q is at the origin. A charge of 7.00 µC is in the first quadrant, along a line 60.0° counterclockwise from the positive x-axis. A charge of −4.00 µC is at (L, 0). (a) Calculate the electric field at the position of charge q due to the 7.00-µC and −4.00-µC charges.Once you calculate the magnitude of the field contribution from each charge you need to add these as vectors.kN/C î + You have given the magnitude of the field due to the 7.00-µC charge. What is the y component of this field? kN/C ĵ(b) Use your answer to part (a) to determine the force on charge q.mN î + mN ĵ

Physics for Scientists and Engineers: Foundations and Connections
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Chapter23: Electric Forces
Section: Chapter Questions
Problem 73PQ: A Two positively charged particles, each with charge Q, are held at positions (a, 0) and (a, 0) as...
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Three charged particles are at the corners of an equilateral triangle as shown in the figure below. (Let q = 4.00 µC, and L = 0.750 m.)

Three charged particles lie in the x y coordinate plane at the vertices of an equilateral triangle with side length L.
  • Positive charge q is at the origin.
  • A charge of 7.00 µC is in the first quadrant, along a line 60.0° counterclockwise from the positive x-axis.
  • A charge of −4.00 µC is at (L, 0).
(a) Calculate the electric field at the position of charge q due to the 7.00-µC and −4.00-µC charges.

Once you calculate the magnitude of the field contribution from each charge you need to add these as vectors.kN/C î +
You have given the magnitude of the field due to the 7.00-µC charge. What is the y component of this field? kN/C ĵ

(b) Use your answer to part (a) to determine the force on charge q.
mN î + mN ĵ

 

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