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![[Post New]](/templates/default/images/icon_minipost_new.gif) 6 Mar 2008 20:15:09 IST
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initial avtivity of a living organism is 15 decays / min
when dead its activity reduced to 9 decays/min
given half life of C14 = 5730 years
then how many years ago it was alive
Ans 4224 years
Please give detailed solution if possible with concepts i am not able to solve such qns
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When there is no hope & everything in dark..........
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 6 Mar 2008 20:24:15 IST
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T / t=(log n -log n') /log2 but t =5730 , log 2 =0.301 n'=15 n= 9
wese mene ese problem solve kiye nahi hai
par shayad ye answer de
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 6 Mar 2008 22:12:37 IST
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answer de raha hai thanks
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When there is no hope & everything in dark..........
World says go & Graves say come.........
So never loose hope & Try another way.........
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