Radioactive decay is defined as: A. The decrease in the amount of any radioactive material due to the spontaneous emission of nuclear radiation from the nucleus B. The gradual decrease in the number of radioactive atoms in radioactive material due to spontaneous fission C. The decline in the strength of a radioactive source due to the combined effects of time, distance, and shielding D. The decomposition of radioactive atoms due to lengthy exposure to direct sunlight

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Radioactive decay is defined as: The decrease in the amount of any radioactive material due to the spontaneous emission of nuclear radiation from the nucleus.

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The rem is a unit used to measure: A. Radiation exposure B. Radiation dose in terms of the amount of the biological effect caused by the amount of energy absorbed C. Radioactivity D. Radiation dose in terms of the amount of energy absorbed

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The rem is a unit used to measure: Radiation dose in terms of the amount of the biological effect caused by the amount of energy absorbed.

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Which of the following is an example of proper units for expressing exposure rate

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