centenoherrerajennif centenoherrerajennif

25-05-2021
Physics

contestada

A student has an 80 g sample of a radioactive material that has a half-life of 20 seconds. How much material will he have left after 60 seconds?

A.
10 g

B.
20 g

C.
40 g

D.
5 g

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moneymanmunye moneymanmunye

25-05-2021

The answer is C 40 g

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