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29-10-2022
Physics

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The graph below shows the decay of a radioactive isotope. The half life is 40 seconds - approximately, how many radioactive atoms remain after 2 half-lives?

a 15 atoms
b 8 atoms
c 5 atoms
d 0 atoms
the graph is the link

The graph below shows the decay of a radioactive isotope The half life is 40 seconds approximately how many radioactive atoms remain after 2 halflives a 15 atom class=

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