Concept explainers
(a)
The half-life in seconds.
(a)
Answer to Problem 19P
Explanation of Solution
Given info: Half-life of
The half life is,
Conclusion:
The half-life is
(b)
The decay constant.
(b)
Answer to Problem 19P
Explanation of Solution
Given info: Half-life of
Formula to calculate the decay constant is,
Substitute
Conclusion:
The decay constant is
(c)
The activity in SI unit.
(c)
Answer to Problem 19P
Explanation of Solution
Given info: Activity of
The activity in SI unit is,
Conclusion:
The activity in SI unit is
(d)
The number of
I 131
.
(d)
Answer to Problem 19P
Explanation of Solution
Given info: Activity of
Formula to calculate the number of
Substitute
Conclusion:
The number of
(e)
The number of half-lives completed and activity.
(e)
Answer to Problem 19P
The number of half-lives completed is 5.
The activity is
Explanation of Solution
Section 1:
To determine: The number of half-lives completed.
Answer: The number of half-lives completed is 5.
Explanation:
Given info: Activity (
Formula to calculate the number of half-lives is,
Substitute 40.2 days for t and 8.04 days for
The number of half-lives completed is 5.
Section 2:
To determine: The activity.
Answer: The activity is
Explanation:
Given info: Activity (
Formula to calculate the activity is,
Substitute
The activity is
Conclusion:
The number of half-lives completed is 5.
The activity is
Want to see more full solutions like this?
Chapter 29 Solutions
College Physics
- In the following eight problems, write the complete decay equation for the given nuclide in the complete XZAN notation. Refer to the periodic table for values of Z. decay of 226Ra, another isotope in the decay series of 238U, FIrst recognized as a new element by the Curies. Poses special problems because its daughter is a radioactive noble gas. In the following four problems, identity the parent nuclide and write the complete decay equation in the XZAN notation. Refer to the periodic table for values of Z.arrow_forwardWhich of the following is the correct daughter nucleus associated with the alpha decay of 72157Hf? (a) 72153Hf (b) 70153Yb (c) 70157Ybarrow_forwardIn the following eight problems, write the complete decay equation for the given nuclide in the complete XZAN notation. Refer to the periodic table for values of Z. decay of 40K, a naturally occurring rare isotope of potassium responsible for some of our exposure to background radiation.arrow_forward
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningModern PhysicsPhysicsISBN:9781111794378Author:Raymond A. Serway, Clement J. Moses, Curt A. MoyerPublisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning