If the ratio of carbon-14 to carbon-12 in a piece of bone is only one-eighth of the atmospheric ratio, how old is the bone?
If the ratio of carbon-14 to carbon-12 in a piece of bone is only one-eighth of...
If the ratio of carbon-14 to carbon-12 in a piece of bone is only one-half of the atmospheric ratio, how old is the bone?
The ratio of carbon-14 to carbon-12 in a piece of charcoal from an archeological excavation is found to be one-half the ratio in a sample of modern wood. Approximately how old is the charcoal? a) 3,000 years b) 6,000 years c) 9,000 years d) 12,000 years
1. The half-life of carbon-14 is 5730 years. A sample is found to have one-eighth the original amount of carbon-14 in it. How old is the sample? 5730 years, 716 years, 45800 years, 17200 years 2. Why wouldn't you use carbon-14 dating on a piece of shell that was estimated to be 1 million years old? Sea shells do not have radioisotopes, carbon dating is only useful on plants, uranium dating is better for items older than 1/2 million years,...
If an ancient campfire were analyzed, was found to have only about one-eighth the carbon-14 that is normally found in living things, how long ago was that campfire extinguished? Answer in units of y.
Carbon 14 has a half-life of 5.73*10^3 years. C-14 in a piece of living bone has an activity of 14 decays per minute per gram of bone. If a bone found under a parking lot in San Diego has an activity of 3.5 decays per minute per gram of bone, then approximately how long has it been since the bone was alive?
18 of 30 (17 comple If a bone contains 92% of its original carbon-14, how old is the bone? (Carbon-14 has a half-life of 5730 years.) The bone is years old (Round the final answer to the nearest year as needed. Round all intermediate values to six decimal places as needed.)
Carbon 14 is a radioactive isotope produced in the upper atmosphere by cosmic rays. It has a half-life measured as 5730 : 40 years. Since plants and animals absorb carbon from the atmosphere, the percentage of carbon a living organism contains that is carbon 14 is equal to the percentage of carbon 14 in the atmosphere. When an organism dies, however (or when a layer of wood is laid down as bark in a tree), it ceases to absorb carbon....
The amount of carbon-14 present in animal bones after t years is given by P(t) = Poe -0.00012! A bone has lost 36% of its carbon-14. How old is the bone? The bone is years old. (Round to the nearest integer as needed.)
The carbon-14 to nitrogen-14 radiometric isotope decay series has a half-life of 5 730 years. If you find an ancient bone in Africa that has a ration of carbon-14 to nitrogen-14 of 1:15, how old is the bone?
Question 37 2.56 pts A piece of fossilized wood has a carbon-14 radioactivity that is 1/4 that of new wood. The half- life of carbon-14 is 5730 years. How old is the cloth? O 3 x 5730 = 17,190 years O2 5730 - 11,460 years O 1 x 5730 - 5730 years a 0.25 x 5730 - 1432 years