5. Cosmic radiation mostly consists of A. Alpha particles B. Electrons C. Neutrons D. Protons

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5. Cosmic radiation mostly consists of
A. Alpha particles
B. Electrons
C. Neutrons
D. Protons
6. What is the predominant source of radon-222?
A. Atmospheric spallation of cosmic radiation
B. Decay product of terrestrial uranium
C. Fallout from nuclear explosions
D. Nuclear medicine byproducts
A. 5%
7. A report issued in 2009 by the NCRP (No. 160) indicates that CT
exams (x-ray computed tomography) account for
В. 24%
С. 48%
of the
annual average equivalent dose (EqD) of ionizing radiation to the
general public of the United States.
D. 95%
Transcribed Image Text:5. Cosmic radiation mostly consists of A. Alpha particles B. Electrons C. Neutrons D. Protons 6. What is the predominant source of radon-222? A. Atmospheric spallation of cosmic radiation B. Decay product of terrestrial uranium C. Fallout from nuclear explosions D. Nuclear medicine byproducts A. 5% 7. A report issued in 2009 by the NCRP (No. 160) indicates that CT exams (x-ray computed tomography) account for В. 24% С. 48% of the annual average equivalent dose (EqD) of ionizing radiation to the general public of the United States. D. 95%
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