+0

# Help me Please

0
153
1

when a plant or animal dies it stops acquiring carbon-14 from the atmosphere. carbon-14 decays over time with half-life of about 5730 years, the percent P of the original amount of carbon-14 that remains in a sample after t years is given by this equation. P=100(1/2)^t/5730 a. what percent of the riginal carbon-14 remains in a sample after 2500 years? 5000 years? 10,000 years? b. graph the model c. an archaeologist found a bison bone that contained about 37% of the carbon-14 present when the bison died. Use the graph to estimate the age of the bone when it was found.

Guest Apr 7, 2017
Sort:

### 1+0 Answers

#1
+77243
+1

P=100(1/2)^(t/5730)

a.

After 2500 years  ≈ 73.9%

After 5000 years ≈  54.6%

After 10,000 years ≈ 29.8%

b.  Here's the graph : https://www.desmos.com/calculator/229ckgarkg

c. 37% remains after about 8200 years

CPhill  Apr 7, 2017

### 6 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details