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Author Question: If a star's apparent visual magnitude is equal to its absolute visual magnitude, how far is the star ... (Read 57 times)

RYAN BANYAN

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on: Jul 27, 2018
If a star's apparent visual magnitude is equal to its absolute visual magnitude, how far is the star located from Earth?
 
  a. 0 pc b. 1 pc
  c. 10 pc d. 100 pc

Question 2

An isolated black hole in empty intergalactic space would be difficult to detect because
 
  a. there would be no stars behind it whose light would be affected by gravitational lensing.
  b. it could not emit light from inside its event horizon.
  c. no companion stars would be affected by its gravitational field.
  d. no matter would be falling into it to create an X-ray-emitting accretion disk.
  e. All of the other choices are correct.


TheDev123

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

c

Answer to Question 2

e


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