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Consider an infinitesimal segment located at an angular position θ on the semicircle, measured from the lower right corner of the semicircle at x=a, y=0. (thus θ=π2 at x=0, y=a and θ=π at x=−a, y=0.) what are the x- and y- components of the electric field at point p (dex and dey) produced by just this segment? express your answers separated by a comma in terms of some, all, or none of the variables q, a, θ, dθ, and the constants k and π.
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