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The activity from a mixed radioactive sample is measured at different times and given in a table like this:

Time (h).....Decays/sec

-----------------------

0.0 ................... 7500

0.5 ................... 4190

1.5 ................... 3100

: ....................... :

: ....................... :

12.0 .................. 280

I am now supposed - based on this table - to determine how many different nuclids the sample consists of along with their half-lives. How can I possibly extract that information uniquely from that table (the numbers in the table aren't exactly the right ones, since I can't remember them).

maybe the table needs some explanation, because of the crappy layout; the left-hand column is the time in hours and the right-hand column gives the corresponding activities (I haven't written the complete table).

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# Homework Help: Difficult nuclear physics exercise

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