how to calculate this problem?  calculate the age of the Shroud of Turin given that the amount of 14C found in it is 87% of that in living tissue.

Oil and coal generally contain no measurable 14C. What does this tell us about how long they have been buried?

When the y term is greater than 1.005 one should begin considering relativistic effects in calculations. The fraction of the speed of light (v/c) associated with this y is [ Select ] V m/s. The speed in m/s associated with this gamma value is [ Select ]

i can confirm answer 5118 years is wrong

A sample of wood from an archaeological excavation is dated by using a mass spectrometer to measure the fraction of 14C atoms. Suppose 100 atoms of 14C are found for every 1.0 * 1015 atoms of 12C in the sample. What is the wood’s age?

U-235 sphere the size of a Tootsie Pop Assume that a spherical volume of pure U-235 is the size of a Tootsie Pop. The per capita electrical energy usage (i.e., per person per year) in the U.S. is 11,496 kw-hrs a) How many years would this amount of U-235 power the average person if all the U-235 atoms were fissioned? b) What would be the approximate volume of the waste produced, when the entire sample has fissioned? (Describe this qualitatively.) Assumptions to use: • Pop diameter = 1.25 inch • Density of the U-235 sample = 18.95 g/cc . The atomic mass is 235.044 amu • 180 MeV of heat energy are available from each fission . The efficiency for thermal to electric conversion is 0.32 . Avogadro's number = 6.022e23.

A sample of wood from an archaeological excavation is dated by using a mass spectrometer to measure the fraction of 14C atoms. Suppose 150 atoms of 14C are found for every 1.4×1015 atoms of 12C in the sample. What is the wood's age? Express your answer in years.

A state-of-the-art proton decay experiment is expected to detect 47% of the proton decays in a body of water. Assuming protons have a lifetime of 1031 years, how many m3 of water would you need in order to see 6 decays per month?  (Assume a "month" is one-twelfth of a year.)

How did you get 0.000145038

His case. ewent 5. A radioactive isotope, Selenium, used in the creation of medical images of the pancreas, has a half-life of 119.77 days. If 100 milligrams are given to a patient, how many milligrams are left after 20 days?