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For a sample of a given radioactive isotope, the ratio of the number of atoms of the isotope at time ...

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For a sample of a given radioactive isotope, the ratio of the number of atoms of the isotope at time ...

For a sample of a given radioactive isotope, the ratio of the number of atoms of the isotope at time t to the number at time t + T_1/2 is

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always 2.

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dependent on how long it has been since t = 0.

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Dependent upon what the value of T_1/2.

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always 1/2.

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might be any number less than 1/2.

Textbook

College Physics

Edition: 5^th

Author: Giambattista

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