# Physics, Nuclear Physics. Decay and Nuclei

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#1
Hi, any ideas?

Calculate the decay constant of the sample and use it to estimate the number of nuclei present when the sample is decaying at its highest rate.

decay constant is 9.51x10^-3, half-life is 72.9seconds

thanks
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5 years ago
#2
(Original post by gre90r)
Hi, any ideas?

Calculate the decay constant of the sample and use it to estimate the number of nuclei present when the sample is decaying at its highest rate.

decay constant is 9.51x10^-3, half-life is 72.9seconds

thanks
According to the information you have, you can only use the formula relating activity of the sample and the number of nuclei present initially as the question assumes the time taken is zero (at its highest rate).
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#3
The equation you mention is what in your opinion?
0
5 years ago
#4
(Original post by gre90r)
The equation you mention is what in your opinion?
A=lambdaN

You should be able to work out the activity first. Have you come across these equations?
0
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