the irradiance (e) measured for a star is 3.3 x 10-11c7m2. the star is 1.3 light years from earth. find the apparent pointance of the star.
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the mass of the star is. 3.3 x 10-11c7m2..
therefore: the light years given is 1.3
therefore: the answer is 45.0c2m5
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