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Author Question: Which of the following reactions is the second reaction in the proton-proton chain? A) 1H + 1H ... (Read 120 times)

laurencescou

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on: Jul 27, 2018
Which of the following reactions is the second reaction in the proton-proton chain?
 
  A) 1H + 1H  2H + e+ +  
  B) 2H + 2H  4He + e+ +  
  C) 2H + 1H  3He +  
  D) 3He + 3He  4He + 1H + 1H

Question 2

Which of the following statements is true of brown dwarfs?
 
  A) They are almost the same size as Jupiter.
  B) They emit most of their energy as gamma rays.
  C) They generate energy by hydrogen fusion.
  D) They are high-luminosity objects.


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CAPTAINAMERICA

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

C

Answer to Question 2

A


laurencescou

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Reply #2 on: Jul 27, 2018
Thank you!


CAPTAINAMERICA

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Reply #3 on: Jul 27, 2018
Always glad to help...


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