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willillillusity WistillLe fulllililil I see Sellloll 1 . 4 ) 1. Find the distance to a Sun - like star ( 1 = 3. 8x10 4' ` 10 ` watts ) whose apparent...

willillillusity WistillLe fulllililil I see Sellloll 1 . 4 )1. Find the distance to a Sun - like star ( 1 = 3. 8x10 4' `10` watts ) whose apparent brightness at Earth is 1. 0 x 10watt in .B. You measure the apparent brightness of a particular star to be 2. 5 x 10`' watthmm . A parallaxmeasurement shows the star's distance to be 42 light- years , or about 4 x 10*' meters . What is thestars luminosity?
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