Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Concept explainers
Question
Chapter 46, Problem 1PLA
To determine
The quantity that is assumed to have a true value.
Expert Solution & Answer
Answer to Problem 1PLA
The quantity that is assumed to have a true value is
Explanation of Solution
In nuclear counting experiments, uncertainty exists due to the random nature of the nuclear decay process even if the sources of error in the experiment are removed.
The quantity that is assumed to have a true mean value of the count is designated as
Conclusion:
Thus, the quantity that is assumed to have a true value is
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- If everyone in Australia received an extra 0.05 mSv per year of radiation, what would be the increase in the number of cancer deaths per year? (Assume that time had elapsed for the effects to become apparent.) Assume that there are 200104 deaths per Sv of radiation per year. What percent at the actual number of cancer deaths recorded is this?arrow_forwardIf a 1.50cmthick piece of lead can absorb 90.0% of the rays from a radioactive source, how many centimeters of lead are needed to absorb all but 0.100% of the rays?arrow_forwardA beam of 168MeV nitrogen nuclei is used for cancer therapy. If this beam is directed onto a 0.200kg tumor and gives it a 2.00Sv dose, how many nitrogen nuclei were stopped? (Use an RBE of 20 for heavy ions.)arrow_forward
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