help and explain please When a plant or an animal dies, its 14C content decreases with...
When a plant or an animal dies, its 14C content decreases with a half-life 5730 years. If an archeologist finds an ancient firepit containing partially consumed firewood and the 14C content of the wood is only 15% that of an equal carbon sample from a present-day tree, what is the age of the ancient site?
An archeologist finds an ancient fire pit containing partially consumed firewood, and the carbon-14 content of the wood is only 10.4 % that of an equal carbon sample from a present-day tree. What is the age in years of the ancient site? Your answer should be in the form of N x 104 years. Enter only the number N with two decimal places, do not enter unit. Carbon-14 has a half-life of 5 730 years
Can a magnetic field do work on a charge? yes no The half-life of 14C is 5730 years. Explain how we can use this information to estimate the age of wood samples found in ancient campsites. Be explicit. Suppose the wood from an ancient campsite contains 1/128 of the 14C found in a present day sample. How old is the wood?
A sample of wood from an ancient wheel was found to contain 20.8 % 14C content as compared to a present-day sample. The tyz for 14C is 5720 yrs. Determine the decay constant for 14C and the age of the wood. I- Click here to enter answer-
A 2.10-g sample of wood from an archaeological site gave 8600 disintegrations of 14C in a 10-hour measurement. In the same time, a 2.10-g modern sample gave 19000 disintegrations. Calculate the age of the wood. The half-life of carbon-14 is 5730 years.
An archeologist on a dig finds a fragment of an ancient basket woven from grass. Later, it is determined that the carbon-14 content of the grass in the basket is 9.35 % that of an equal carbon sample from present-day grass. What is the age of the basket?
11. My Notes Ask Your Teacher -/10 points Content Carbon dating An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 435 g (HINT: Assume all the carbon is 12C and determine the number of atoms) and careful measurements show that the remaining 14C has a current decay rate of 11 decays/s. Determine the age of the bone (and presumably the jewelry). Remember, the ratio of 14C to 12C when the animal died was...
The answer is not 13657.8 A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 1.2 kg sample of carbon from the wood has an activity of 1660 decays per minute. Find the age of the charcoal. Living material has an activity of 15 decays/minute per gram of carbon present and the half-life of 14C is 5730 y.
Chem 142, Dr. Haefner 3 s. The radioactive decay of l4C is frst order, and the half-life is 5800 years While a plant or anim ng, it has a constant proportion of 14C (relative to 12C) in its composition. When the organism dies, the proportion of 14C decreases as a result of radioactive decay, and the age of the organism can be determined if the proportion of carbon-14 in its remains is measured. If the proportion of 14C in an...
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....