shenaeleah shenaeleah

01-03-2021
Physics

contestada

A radioactive isotope has a half-life of 20 hours. How long will it take for 3/4 of the source to decay?

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odetayojomiloju odetayojomiloju

01-03-2021

Answer:

40 hours

Explanation:

in 20 hours, 1/2 will decay

in 40 hours, 1/4 will decay

therefore, 40 hours

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