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Author Question: Because the Hubble constant equals 70 km/s/Mpc, a galaxy with a recession velocity of 4,900 km/s ... (Read 57 times)

lidoalex

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on: Jul 27, 2018
Because the Hubble constant equals 70 km/s/Mpc, a galaxy with a recession velocity of 4,900 km/s would be a distance of ____ Mpc from Earth.
 
  a. 0.014
 b. 70
 c. 4930
 d. 4970
 e. 343,000

Question 2

What is the function of the receiver antenna of a radio telescope?
 
  a. To absorb the radio energy collected by the dish
  b. To collect and focus the radiation
 c. To follow a signal
 d. To move the telescope
 e. To control the shape of the dish


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at

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

b

Answer to Question 2

a


lidoalex

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Reply 2 on: Jul 27, 2018
:D TYSM

xiazhe

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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