2 years ago

The graph below shows the radioactive decay of a material whose half life is 25 years.

1 answer:

5 0

The half life is the time taken for the amount of a substance to become half of its original value. If we take the initial value to be 30 on the y-axis, the half of 30 is 15. We check the time at which the substance has reduced to 15 atoms and this is about 40 seconds. 40 seconds therefore, is your answer.

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Greeley [361]

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