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5. A thin, uniformly charged, circular arc with a radius of curvature of 0.344 m lies in the x y plane with its center of curvature at the origin. Its linear charge density is +25.8. pC/m It is subtended between the angles 60 degrees and 120 degrees counterclockwise from the positive x-axis. Determine the magnitude and direction of the electric field at the origin. (Answer: 0.674 N/C in the negative y-direction)