6. For concreteness, consider that charge 2 lies 0.15 m east of charge 1, and the point at which we areasked to evaluate their net ±eld isr=0.075 m east of charge 1 andr.075 m west of charge 2. Thevalues of charge areq1=−q2=2.0×10−7C. The magnitudes and directions of the individual ±elds arespeci±ed:¯¯¯~E1¯¯¯=q14πε0r2=3.2×105N/Cand~E1points east
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