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Author Question: Radioactive substance A breaks down to substance B with a half-life of 1,000 years. If we start out ... (Read 191 times)

CQXA

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on: Jul 16, 2018
Radioactive substance A breaks down to substance B with a half-life of 1,000 years. If we start out with four kilograms of radioactive substance A, how much of those four kilograms of substance A will remain in 3,000 years?
 
  A) 250 grams
  B) 500 grams
  C) 1 kilogram
  D) 2 kilograms

Question 2

Radiation exposure immediately around a properly functioning nuclear power plant is about
 
  A) 1 greater than the normal environmental background exposure.
  B) double normal environmental background exposure.
  C) 10 times higher than normal environmental background exposure.
  D) 100 times higher than normal environmental background exposure.


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nmyers

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Reply #1 on: Jul 16, 2018
Answer to Question 1

B

Answer to Question 2

A


CQXA

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

ryansturges

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Reply 3 on: Yesterday
Excellent

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