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Author Question: If a quasar has a recessional velocity of 2.7 105 km/s and is determined to be 3600 Mpc, what is ... (Read 57 times)

xclash

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on: Jul 27, 2018
If a quasar has a recessional velocity of 2.7  105 km/s and is determined to be 3600 Mpc, what is the Hubble constant based on this quasar alone? Hint: Note that the units of your result should be (km/s)/Mpc to see what arithmetic process you need to perform.
 
  a. 50 km/s/Mpc
  b. 9.7  108 (km/s)Mpc
  c. 75 km/s/Mpc
  d. 0.013 km/s/Mpc
  e. 273,600 km/s/Mpc

Question 2

Synchrotron radiation is produced by
 
  a. objects with temperature below 10,000 K.
  b. high-velocity electrons moving through a magnetic field.
  c. cold hydrogen atoms in space.
  d. the collapsing cores of massive stars.
  e. a helium flash.


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adf223

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

c

Answer to Question 2

b


xclash

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Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


adf223

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Reply #3 on: Jul 27, 2018
Great! Please up vote :D


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