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In empty space there is (-∞, 0) semi-infinite linear uniform and constant charge density ρ_l = 3 [C / m] on the z-axis. Calculate the electrostatic field that this charge density will create at the point C (0,0,4).
k_e = 1 / 4πε

Write numerically the components of the electrostatic field in terms of the given quantities.

E = ke
üz + ke
ủy + ke
üz

-C
-00

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