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Author Question: The normal U.S. average annual radiation dose per person is about how many REM? What will be an ... (Read 59 times)

Deast7027

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The normal U.S. average annual radiation dose per person is about how many REM?
 
  What will be an ideal response?

Question 2

A photon cannot create an electron pair unless its frequency is
 
  A) less than 1.24  1020 Hz.
  B) less than 2.47  1020 Hz.
  C) greater than 1.24  1020 Hz.
  D) greater than 2.47  1020 Hz.
  E) infinite.



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leannegxo

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Answer to Question 1

0.20

Answer to Question 2

C




Deast7027

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Reply 2 on: Jul 27, 2018
Excellent


dantucker

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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