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17) A radar onboard a satellite at 850 km altitude transmits a signal that enters Earth's surface with electric field amplitude of 3.28 V/m. The

17) A radar onboard a satellite at 850 km altitude transmits a signal that enters Earth's surface with electric field amplitude of 3.28 V/m. The area illuminated on the ground is 6.25 m2. Find: (a) the power flux density of the radar signal, and (b) the energy absorbed by Earth's surface per minute

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