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Author Question: If the redshift of a quasar were 3, at what wavelength would the 486.1-nm line of hydrogen appear in ... (Read 96 times)

Hungry!

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on: Jul 27, 2018
If the redshift of a quasar were 3, at what wavelength would the 486.1-nm line of hydrogen appear in the quasar's spectrum?
 
  What will be an ideal response?

Question 2

Why do higher-mass stars live shorter lives on the main sequence than lower-mass stars?
 
  a. Higher-mass stars burn through their nuclear fuel faster.
  b. Lower-mass stars don't get their energy from that same nuclear fusion source as higher-mass stars.
  c. Higher-mass stars have less hydrogen fuel to burn.
  d. Lower-mass stars spend a longer time evolving to the main sequence.
  e. All of the other choices are false.


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kkenney

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

1944.4 nm

Answer to Question 2

a


Hungry!

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Reply 2 on: Jul 27, 2018
Gracias!

aruss1303

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Reply 3 on: Yesterday
Excellent

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