What is a white dwarf composed of?
A) hydrogen nuclei and degenerate electrons
B) helium nuclei and normal electrons
C) carbon and oxygen nuclei and degenerate electrons
D) degenerate iron nuclei
Correct Answer:
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Q20: What principle explains why matter flowing from
Q21: As a white dwarf cools,why does its
Q22: When material expanding away from a star
Q23: Where is synchrotron radiation produced?
A)in planetary nebulae
B)in
Q24: Why can't massive stars generate energy through
Q26: What does the Chandrasekhar-Landau limit tell us?
A)Accretion
Q27: Why can't the lowest mass stars become
Q28: After they leave the main sequence,what happens
Q29: When does a type-II supernova occur?
A)when a
Q30: Which of the following is almost always
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