Biology

Biology, 10.09.2019 01:10, khenalilovespandas

If a sample of rock is determined to be approximately 28,000 years old, apporximately what percent of the sample is still carbon-14?

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Mathematics, 30.07.2019 01:30, demotte79991

Carbon-14 has a half-life of 5,730 years. if the age of an object older than 50,000 years cannot be determined by radiocarbon dating, then * carbon-14 levels in a sample are undetectable after approximately ten half-lives. * carbon-14 levels in a sample are undetectable after approximately nine half-lives. * the half-life of carbon-14 is too long to accurately date the object. * a radioisotope with a shorter half-life should be used to date the object.

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Physics, 19.08.2019 18:10, evelyn82

The age of a piece of wood from an archeological site is to be determined using the carbon-14 method. the activity of the sample is measured to be 0.596 times the carbon-14 activity of living plants. what is the age of the sample in years? (the half-life of the carbon-14 isotope is 5730 years.)

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Biology, 04.09.2019 00:30, yazzyv05

plz hep p8 points if u do the table below shows the half-life of an element: half-life data element half-life carbon-14 5,730 years scientists have found that the carbon-14 content of an unknown prehistoric sample was reduced to one-half. what best describes the identity of the sample? an organism that died more than 10,000 years ago a rock that formed more than 10,000 years ago an organism that died 5,730 years ago a rock that formed 5,730 years ago

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Mathematics, 13.09.2019 17:30, deojahnaeb37

The amount of carbon 14 still present is a sample after t years is given by the function c(t)= coe-.00012t where co is the initial anong . estimate the age of a sample of wood discoverd by a arecheologist if the carbon level in the sample is only 20% of it orginal carbon 14 level.

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