A space probe 2.0 x 1010 m from a star measures the total intensity of electromagnetic radiation from the star to be 5.0 x 103 W/m2 . If the star radiates uniformly in all directions, what is its total average power output?
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A space probe 2.0 x 1010 m from a star measures the total intensity of
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- An electromagnetic wave with frequency 4.00x1014 Hz propagates with a speed of 2.10x108 m/s in a certain piece of glass . Find the dielectric constant for glass at this frequency assuming that the relative permeability is unity. (unitless)If the intensity of sunlight at the Earth's surface under a fairly clear sky is 1 444 W/m², how much electromagnetic energy per cubic meter is contained in sunlight? µJ/m³The amplitude of the electric field of an electromagnetic wave traveling in a vacuum is measured to be 3.8 ✕ 102 V/m. What is the amplitude of the magnetic field in this wave?
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