Friday

October 24, 2014

October 24, 2014

Posted by **M.T.** on Thursday, February 9, 2012 at 11:00pm.

- Intro to Astronomy -
**drwls**, Friday, February 10, 2012 at 8:57amIf 1% is left,

(0.01) = (0.5)^N

where N is the number of half-lives.

N = 6.644

minimum age = 37,900 years

There will be less than 1% left if the sample is older than that, so that is a minimum age.

There is not much about astronomy here

**Answer this Question**

**Related Questions**

algebra - carbon 14 has a hlf life of 5700 years. scientists use this fact to ...

ChemB - The activity of carbon 14 in living tissue is 15.3 disintegrations per ...

Physics - Could someone help explain this problem to me . . . Carbon 14 has a ...

chemistry - A 1.00-g sample of carbon from a modern source gave 15.3 ...

chemistry - A 1.00-g sample of carbon from a modern source gave 15.3 ...

Chemistry - What is the famous isotope used in archeological dating? carbon 12 I...

Calc II - Carbon-14 has a half-life of 5700 years. The charcoal from a tree ...

Radioactivity - 1. A granite rock is thought to be about 2 billion years old. ...

College Algebra - Carbon-14 Dating. Only 10% of the carbon-14 in a samll wooden ...

Chemistry - The half-life of C-14 is 5700 years. If it took seven half lives for...