Mathematics, 17.03.2020 04:05, mprjug6

SCALCET8 3.8.011. My Notes Scientist can determine the age of ancient objects by a method called radiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope of carbon, 14C, with a half-life of about 5730 years. Vegetation absorbs carbon dioxide through the atmosphere and animal life assimilates 14C through food chains. When a plant or animal dies, it stops replacing its carbon and the amount of 14C begins to decrease through radioactive decay. Therefore, the level of radioactivity must also decay exponentially. A parchment fragment was discovered that had about 64% as much 14C radioactivity as does plant material on Earth today. Estimate the age of the parchment. (Round your answer to the nearest hundred years.) yr

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 17:00, mmassaro19

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

Answers: 1

continue

Mathematics, 21.06.2019 20:00, stichgotrich7159

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Answers: 1

continue

Mathematics, 21.06.2019 23:00, firefightergros7271

Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events

Answers: 2

continue

Mathematics, 21.06.2019 23:20, ramireztony741

Write the equations in logarithmic form 7^3=343

Answers: 1

continue

Do you know the correct answer?

SCALCET8 3.8.011. My Notes Scientist can determine the age of ancient objects by a method called rad...