## How do you calculate the age of a sample?

1:373:14Calculating the age of a sample using 14C decay - YouTubeYouTubeStart of suggested clipEnd of suggested clipWe can make use of that to determine the age of the tree. Well start by writing down the half-lifeMoreWe can make use of that to determine the age of the tree. Well start by writing down the half-life formula. Thats a of T is equal to a naught times one-half to the T over K where K is the half-life.

## How can a carbon-14 calculator be used to determine the age of a fossil?

0:002:34Determining the Age of a Fossil Using Carbon-14 - YouTubeYouTubeStart of suggested clipEnd of suggested clipA fossil contains 60% of its original carbon-14 how old is the fossil. This is an example ofMoreA fossil contains 60% of its original carbon-14 how old is the fossil. This is an example of radioactive decay. So our equation is going to be a of T equals a naught e to the KT decay.

## How old is a fossil that has 25% of the original amount of carbon-14?

The half-life for 14C is approximately 5700 years, therefore the 14C isotope is only useful for dating fossils up to about 50,000 years old. Fossils older than 50,000 years may have an undetectable amount of 14C. For older fossils, an isotope with a longer half-life should be used.

Mode for grouped data is given as Mode=l+(f1−f02f1−f0−f2)×h , where l is the lower limit of modal class, h is the size of class interval, f1 is the frequency of the modal class, f0 is the frequency of the class preceding the modal class, and f2 is the frequency of the class succeeding the modal class.