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A -6.5-µC point charge is 8.0 cm from a -17-µC charge. What is the electric energy density at the point midway between them? (ε0 = 8.85 × 10-12 C2/N ∙ m2, k = 1/4πε0 = 9.0 × 109 N ∙ m2/C2)
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