Answered: What is the relationship between…

What is the relationship between radiation intensity and distance? Derive a mathematical expression for the relationship.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

Question

100%

K.
Virtual General Chemistry Laboratory
M
N.
Nuclear Chemistry
Name
Experiment 4 - Radiation Intensity vs Distance
Date
Gamma radiation (gallium-67)
Intensity vs Distance
Distance (cm)
Activity (counts/s)
1100
1000
1000
21
250
900
105
800
4.
62
700
5.
39
600
27
500
20
400
300
8.
16
200
9.
13
100
10
10
4
8
10
Distance (cm)
Analysis
1. What is the relationship between radiation intensity and distance? Derive a mathematical expression for the relationship.
2. When a sample of phosphorus-32 (a beta-emitter used to treat leukemia and pancreatic cancer) was placed 1 cm from the detector, the intensity of its radiation was measure
counts per second. What would its activity be 2 cm from the detector? 5 cm?
3. X rays are a type of ionizing radiation similar to gamma rays. Why does the X ray technician leave the room when you receive an X ray?
6 ト
Activity (counts/s)

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