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Author Question: About how many stars are visible to the naked eye on a clear, dark night away from city lights? ... (Read 89 times)

crobinson2013

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on: Jul 27, 2018
About how many stars are visible to the naked eye on a clear, dark night away from city lights?
 
  A) several million B) a few dozen
  C) a couple thousand D) a few hundred billion

Question 2

Why does the size of a white dwarf decrease with increasing mass?
 
  What will be an ideal response?


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javimendoza7

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

C

Answer to Question 2

A more massive white dwarf has a stronger gravitational force that compresses its mass to a greater density. The degeneracy pressure that supports a white dwarf against collapse increases as the density increases, and the balance between degeneracy pressure and gravity is reached such that the a more massive white dwarf is smaller in radius.


crobinson2013

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Reply 2 on: Jul 27, 2018
Gracias!

cici

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Reply 3 on: Yesterday
Wow, this really help

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