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Author Question: What is a white dwarf? A) a star that follows a period-luminosity relation B) a type of star ... (Read 35 times)

natalie2426

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on: Jul 27, 2018
What is a white dwarf?
 
  A) a star that follows a period-luminosity relation
  B) a type of star that produces energy by gravitational contraction
  C) a main-sequence star of spectral type F, which tends to look white in color
  D) the remains of a star that ran out of fuel for nuclear fusion

Question 2

The Schwarzschild radius of a black hole is about 3 km per solar mass.
 
  Indicate whether the statement is true or false


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LP

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

D

Answer to Question 2

TRUE


natalie2426

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

isabelt_18

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Reply 3 on: Yesterday
Excellent

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