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Author Question: A wave is a vibration in A) space. B) time. C) both of these D) none of the ... (Read 19 times)

NguyenJ

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on: Jul 29, 2018
A wave is a vibration in
 
  A) space.
  B) time.
  C) both of these
  D) none of the above

Question 2

When an unstable nucleus decays by emitting an alpha particle, the atomic mass number A of the nucleus
 
  A) increases by 4.
  B) increases by 2.
  C) decreases by 2.
  D) decreases by 4.
  E) remains unchanged.


peter

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

D


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