Physics
WAEC 2022
The half-life of a radioactive substance is 15 hours. If at some instance, the sample has a mass of 512 g, calculate the time it will take \(\frac{7}{8}\) of the sample to decay
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A.
15 hours
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B.
30 hours
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C.
45 hours
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D.
60 hours
Correct Answer: Option C
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