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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 61 times)

Deast7027

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

0.20

Answer to Question 2

C


Deast7027

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Reply 2 on: Jul 27, 2018
Gracias!

rachel

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Reply 3 on: Yesterday
Wow, this really help

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