A star's luminosity is the
A) apparent brightness of the star in our sky.
B) surface temperature of the star.
C) lifetime of the star.
D) total amount of light that the star will radiate over its entire lifetime.
E) total amount of light that the star radiates each second.
Correct Answer:
Verified
Q11: Why is the spectral sequence of stars
Q12: The spectral sequence in order of decreasing
Q13: Since all stars begin their lives with
Q14: Why do astronomers often measure the visible-light
Q15: Suppose you see two main-sequence stars of
Q17: Which of the following statements about apparent
Q18: What are the standard units for apparent
Q19: What are the standard units for luminosity?
A)watts
B)joules
C)Newtons
D)kilograms
E)watts
Q20: If the distance between us and a
Q21: On a Hertzsprung-Russell diagram,where would we find
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