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In the figure an electric dipole swings from an initial orientationi (0; = 19.2°) to a final orientation f (Of = 19.2°) in a uniform external
electric field E. The electric dipole moment is 1.38 × 10-27 C-m; the field magnitude is 2.40 x 106 N/C. What is the change in the
dipole's potential energy?
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