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Author Question: How does a star's luminosity relate to its radius and surface temperature? What will be an ideal ... (Read 101 times)

lbcchick

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on: Jul 27, 2018
How does a star's luminosity relate to its radius and surface temperature?
 
  What will be an ideal response?

Question 2

The observed relationship between the masses of central black holes and the bulge masses of galaxies implies that ________.
 
  A) the black hole will eventually suck in the rest of the galaxy
  B) galaxy formation and supermassive black hole formation must be related somehow
  C) quasars were more common 10 billion years ago than they are today
  D) the biggest galaxies have the most luminous quasars


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jonathanballen97

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Reply #1 on: Jul 27, 2018
Answer to Question 1

As either radius or surface temperature increases, the luminosity also increases. The luminosity is proportional to the square of the radius and the fourth power of the temperature.

Answer to Question 2

B


lbcchick

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Reply 2 on: Jul 27, 2018
Gracias!

gcook

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Reply 3 on: Yesterday
Excellent

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