The distance between Planet X and a star is 1.8 x 1011 m. At the surface of Planet X, the average intensity of the radiation from the star is 13440 W/m2. If the star radiates isotropically, which of the following is the average power of the star? 9.69 x 1026 w 4.95 x 1028 w O 7.64 x 1024 w O 5.47 x 1027 w
The distance between Planet X and a star is 1.8 x 1011 m. At the surface of Planet X, the average intensity of the radiation from the star is 13440 W/m2. If the star radiates isotropically, which of the following is the average power of the star? 9.69 x 1026 w 4.95 x 1028 w O 7.64 x 1024 w O 5.47 x 1027 w
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Transcribed Image Text:The distance between Planet X and a star is 1.8 x 1011 m. At the surface of Planet X, the average intensity of the radiation from the star is 13440 W/m2. If the star radiates isotropically, which of the following
is the average power of the star?
9.69 x 1026 wW
4.95 x 1028 w
7.64 x 1024 w
5.47 x 1027 w
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