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13-08-2024
Physics

Answered

Stored Energy. In a region of space where there are no currents, the time-averaged pointing vector equals 120 W/m². Assume that this power density is uniform on the surface of a sphere of radius a = 0.1 m, pointing outwards. Calculate the total stored energy in the sphere. The frequency is 1 GHz and the sphere has properties of free space.

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