± carbon-14 dating mastering physics

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± Carbon-14 Dating of an artifact?

Chat or rant, adult content, spam, insulting other members, show more. Harm to minors, violence or threats, harassment or privacy invasion, impersonation or misrepresentation, fraud or phishing, show more. Yahoo Answers. An artifact is found in a desert cave. The anthropologists who found this artifact would like to know its age. They find that the present activity of the artifact is 9. To find the age of the artifact, they will need to use the following What is the age of the artifact? Be mindful of the units.

For complaints, use another form. Upload document Create flashcards. Documents Last activity. Flashcards Last activity. Add to Add to collection s Add to saved. Nuclear Reactions

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Carbon dating is a variety of radioactive dating which is applicable only to matter which was once living and presumed to be in equilibrium with the atmosphere, taking in carbon dioxide from the air for photosynthesis. Cosmic ray protons blast nuclei in the upper atmosphere, producing neutrons which in turn bombard nitrogen, the major constituent of the atmosphere. This neutron bombardment produces the radioactive isotope carbon The radioactive carbon combines with oxygen to form carbon dioxide and is incorporated into the cycle of living things. The carbon forms at a rate which appears to be constant, so that by measuring the radioactive emissions from once-living matter and comparing its activity with the equilibrium level of living things, a measurement of the time elapsed can be made.

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MasteringPhysics: Print View with Answers

Carbon is produced in the atmosphere when neutrons from cosmic radiation react with nitrogen atoms: C ratio of 0. Solution The half-life of carbon is known to be years. Carbon dating is amethod for finding the age of an organic artifact from the quantityof it contains. Carbon has a relatively short half-life of 5, years, meaning that the fraction of carbon in a sample is halved over the course of 5, years due to radioactive decay to nitrogen They find that the present activity of the artifact is 9.

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