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# how do you work out half life problems?

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how do you work out half life problems?

Guest Jun 3, 2014

#2
+4145
+8

i really got to look up my math terms a half life problem what the heck!!that sounds like a non math life related question......

zegroes  Jun 3, 2014
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#1
+26399
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When a parameter, N, say, decays at a rate proportional to how much of it there is at a given time, we can write that $$N=N_0e^{-\lambda t}$$ where $$N_0$$ is the value of N at time t = 0 and $$\lambda$$ is the decay rate.  The half-life, $$\tau$$, is related to $$\lambda$$ by $$\tau =\frac{ln2}{\lambda}$$.

However, this might make more sense if you post a specific half-life question!

Alan  Jun 3, 2014
#2
+4145
+8

i really got to look up my math terms a half life problem what the heck!!that sounds like a non math life related question......

zegroes  Jun 3, 2014
#3
+80933
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zegroes.....The way to work out half-life problems is just to ignore them for the first half of your life........this still leaves you with another half-life to figure them out.....

CPhill  Jun 3, 2014
#4
+4145
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i wish there were no life problems how bout that?

zegroes  Jun 3, 2014
#5
+80933
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Me too, zegroes.....me, too.......!!!

CPhill  Jun 3, 2014
#6
+2353
+3

I have some real half life problem for you

thumbs up if you know the reference

reinout-g  Jun 4, 2014

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