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mikael mikael
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Posts: 12017
10 years ago
About how many days are required for a radioactive sample, with an initial activity of 105Bq, to decay to an activity of 100 Bq? The half-life of the material is  2.7 days. 
A) About  27 days 
B) About  22 days 
C) About  32 days 
D) About  19 days 
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Replies
wrote...
10 years ago
I think your question isn't quoted properly. If you meant if the sample had an initial activity of 10^5 Bq than the answer would be about 27 days.
mikael Author
wrote...
Donated
10 years ago
Thank you.
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