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In free space, there is a point charge Q = 8 nC at (-2 m, 0, 0), an infinite line charge pL = 10 nC/m
that passes through the point (2 m, 2 m, 0) parallel to the z-axis, and a sheet charge p, = 12 nC/m² at
y = -2 m. Illustrate the problem graphically and determine E at the origin.

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