An electric-dipole antenna is placed on the roof of a 201, Ask an Expert

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An electric-dipole antenna is placed on the roof of a 201 meter high building and is oriented vertically. An observer on the ground measures the intensity of the radiation from the antenna and finds 9.79 mW/m². This observer is 1.13 kilometer away from the antenna. A second observer hovers in a blimp at an altitude of 567 meter and measures the radiation intensity from the antenna when she is 1.35 kilometer from the antenna. Determine what intensity does she measure?

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