Concept explainers
(a)
The activity in curies due to each of the isotopes.
(a)
Answer to Problem 63AP
The activity in curies due to each of the isotopes is
Explanation of Solution
Write the expression to find the mass of
Here,
Substitute
Conclusion:
Write the expression to find the number of nuclei in
Substitute
Write the expression to find the activity of
Here,
Substitute
Write the expression to find the number of nuclei in
Substitute
Write the expression to find the activity of
Here,
Substitute
Write the expression to find the number of nuclei in
Substitute
Write the expression to find the activity of
Here,
Substitute
Thus, The activity in curies due to each of the isotopes is
(b)
The fraction of the total activity due to isotopes.
(b)
Answer to Problem 63AP
The fraction of the total activity due to isotopes are
Explanation of Solution
the activity of
Write the expression to find the total activity of the sample.
Here,
Substitute
Conclusion:
Thus, the fraction of activity due to
(c)
Whether activity of the sample is dangerous.
(c)
Answer to Problem 63AP
Yes. The activity of the sample is dangerous.
Explanation of Solution
The activity of
Write the expression to find the total activity of the sample.
Here,
Substitute
Conclusion:
Since, the activity of the sample is
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Chapter 43 Solutions
Physics for Scientists and Engineers with Modern Physics
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- (a) Background radiation due to 226Ra averages only 0.01 mSv/y, but it can range upward depending on where a 226Ra in the 80.0kg body of a man who receives a dose of 2.50mSv/y from it, noting that each 226Ra decay emits a 4.80MeV particle. You may person lives. Find the mass of neglect dose due to daughters and assume a constant amount, evenly distributed due to balanced ingestion and handily elimination. (b) Is it surprising that such a small mass could cause a measurable radiation dose? Explain.arrow_forwardWhich of the following is the correct daughter nucleus associated with the alpha decay of 72157Hf? (a) 72153Hf (b) 70153Yb (c) 70157Ybarrow_forward
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