Question

Carbon-14 has a half-life of about 5,600 years. Archaeologists analyze a piece of wood found at an ancient village site and determine that, of he initial 100 grams of Carbon-14 in the wood, onl 3.125 grams are left. How old is the wood?
bobpursley
3.125=100(1/2)^n/thalf

take log both sides...

log(3.125)=2+n/thlaf (log.5)
so solve for n, then grab you calculator and have fun.
8898

Related Questions

A piece of wood discovered in an archaeological dig was found to have lost 62% of it's carbon-14. Ca... A piece of wood found in an ancient city has a carbon-14 to carbon-12 ratio that is one-eighth the c... The half-life of Carbon-14 is 5715 years. The Carbon-14 content of a piece of wood is that of new... 9. A piece of wood found in an ancient burial mound contains only half as much carbon-14 as a piece...