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Author Question: Which of the following statements is true of open clusters? A) They contain 105 to 106 stars in a ... (Read 68 times)

KimWrice

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on: Jul 27, 2018
Which of the following statements is true of open clusters?
 
  A) They contain 105 to 106 stars in a region about 10 pc in diameter.
  B) They have a transparent appearance.
  C) They comprise stars that are crowded together.
  D) They are spherical.

Question 2

In the context of various observations made, which of the following statements is true of gamma-ray bursts?
 
  A) They occur from one particular region in the sky.
  B) They glow brightly and resemble novae.
  C) Relatively long gamma-ray bursts are produced by a kind of supernova explosion.
  D) Beams of intense radiation flowing into a star result in powerful gamma-ray bursts.


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mohan

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

B

Answer to Question 2

C


KimWrice

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Reply 2 on: Jul 27, 2018
:D TYSM

kusterl

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Reply 3 on: Yesterday
Excellent

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