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An archaeologist extracts a sample of ca...

An archaeologist extracts a sample of carbon from an ancient ax handle and finds that it emits an average of 10 beta emissions per minute. She finds that the same mass of carbon from a living tree emits 40 beta per minute. Knowing that the half life of carbon -14 is 5730 years, she concludes that the age of the ax handle is about

A

2865 years

B

5730 years

C

11460 years

D

17190 years

Text Solution

Verified by Experts

The correct Answer is:
C
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The activity of carbon -14 in a sample of charcoal from an archaeological site is 0.04 Bq. Determine the age of the sample. The half life of carbon -14 is 5730 years.

The normal activity of a living matter containing carbon is found to be 15 decays per minute per gram of carbon. An archaeological specimen gives 6 decays per minute per gram of carbon. If the half -life of carbon is 5730 years, estimate the approximate age of the specimen.

A bone containing 200 g carbon-14 has beta -decay rate of 375 decay/min. Calculate the time that has elapsed since the death of the living one. Given the rate of decay for the living organism is equal to 15 decay per min per gram of carbon and half-life of carbon-14 is 5730 years.

A piece of wood from a recently cut tree shows 20 decays per minute . A wooden piece of same size placed in a museum (obtained from a tree cut many years back) shows 2 decays per minute . If half life of C^(14) is 5730 years , then age of the wooden piece placed in the museum is approximately :

A piece of wood from a recently cut tree shows 20 decays per minute. A wooden piece of same size placed in a museum (obtained from a tree cut many years back) shows 2 decays per minute. If half-life of C^(14) is 5,730 years, then age of the wooden piece placed in the museum is approximately

The beta activity of 1 g of carbon made from green wood is 15.3 counts per minute. If the activity of 1 g of carbon derived from the wood of an Egyptian mummy case is 9.4 counts per minute under the same conditions, how old is the wood of the mummy case?

A sample of wooden artifact is found to undergo 9 disintegration per minute per gram of carbon. What is the approximate age of the artifact? The half life of ._(6)^(14)C is 5730 years and radioactivity of wood recently cut is 15 disintegrations per minute per gram of carbon.

When charcoal is prepared from a living tree, it shows a disintergration rate of 15.3 disintergrations of ^14C per gram per minute. A sample form an ancient piece of charcoal shows ^14C activity to be 12.3 disintergrations per gram per minute. How old is this sample ? Half-life of ^14C is 5730 y.

A 25 g piece of characoal is found in some ruins of an ancient city. The sample shows a C^(14) activity of 250 decay/minutes. How long has the three this charcoal came from been dead ? Given, the half-life of C^(14) is 5730 years. The ratio of C^(14) and C^(12) in the living sample is 1.3 xx 10^(-12) .

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