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Author Question: For each 4He produced in a proton-proton chain, _____. A) the first reaction must occur four ... (Read 239 times)

strangeaffliction

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on: Jul 27, 2018
For each 4He produced in a proton-proton chain, _____.
 
  A) the first reaction must occur four times.
  B) the first and second reactions must occur twice.
  C) the second and third reactions must occur four times.
  D) the third reaction must occur twice.

Question 2

Which of the following statements is true regarding shock waves?
 
  A) They are predominantly transverse in nature.
  B) They can be produced by the birth of very hot stars.
  C) They are also called shear waves.
  D) They cannot be produced by supernova explosions.


miss.ashley

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

B

Answer to Question 2

B


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strangeaffliction

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Reply #2 on: Jul 27, 2018
Thanks


miss.ashley

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Reply #3 on: Jul 27, 2018
Welcome :)


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