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Author Question: Doppler-shift observations of a spectroscopic binary star can enable astronomers to calculate ... (Read 103 times)

joe

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on: Jul 27, 2018
Doppler-shift observations of a spectroscopic binary star can enable astronomers to calculate ________ of its individual stars.
 
  a. the minimum masses
  b. the sizes
  c. both minimum masses and sizes
  d. neither minimum masses nor sizes

Question 2

Compared to a smaller-objective lens, a larger-objective lens makes a star's image
 
  a. brighter.
  b. dimmer.
  c. no effect.


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akemokai

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

a

Answer to Question 2

a


joe

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Reply 2 on: Jul 27, 2018
:D TYSM

isabelt_18

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Reply 3 on: Yesterday
Wow, this really help

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