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# Homework 1 - 3 Health Physics is primarily the study of...

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EEE498 Health Physics Principles Spring 2012 Homework is expected to be turned in on time. Presentation and methods for arriving at the answer are just as important as the mathematical answer. Partial credit will be given if the method is correct. Be sure to box the answer and give the units. Students may work together on the homework, but copying is unacceptable. All problems are worth 10 points. Homework Assignment No. 1. Due Tue Jan 10 Introduction 1. Which of the following are ionizing radiations? a) Cosmic Rays b) Infrared c) Microwaves d) Beta Particles 2. Which of the phenomena listed below are associated with exposure to non-ionizing electromagnetic radiations. a) heating and thermal effects b) cataracts due to thermal heating of the lens of the eye. c) retinal damage due to exposure to high power lasers d) dna damage e) ionization of the tissue

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Unformatted text preview: 3. Health Physics is primarily the study of which aspects of the interaction of radiation with human tissue. a) ionization b) excitation c) point mutations d) acute response to radiation e) all of the above and more 4. The traditional unit of radiation exposure, the Roentgen is a measure of: a) radiation dose to tissue b) charge liberated in air c) radiation flux through a material d) power density EEE498 Health Physics Principles Spring 2012 5. Particles in motion can be considered using Newtonian or relatavistic methods. At what velocity should the more general relatavistic models be used. a) 0.1c b) 0.25c c) 0.5c d) >0.7c 6. Compute the mass of an electron moving at 50% of the speed of light. 7. An x-ray tube set at 100kVp and a 200mA electron beam has an electron flow rate of:...
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