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Home Q & A Board Science-Related Homework Help Physics
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doit_the_clown doit_the_clown
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7 years ago
What is a star's luminosity?
A)   The amount of energy received per second on one square meter of a planet's surface, exactly 1 AU from the star
B)   The total energy emitted by the star into all space per second, measured in watts
C)   The apparent magnitude the star would have if it were located exactly 10 ly from the Earth
D)   The apparent magnitude the star would have if it were located exactly 10 pc from the Earth
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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papachulopapachulo
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7 years ago
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doit_the_clown Author
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7 years ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
Helpmeplease11
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Yesterday
This helped my grade so much Perfect
apelton
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2 hours ago
this is exactly what I needed
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