1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stells [14]
3 years ago
11

A fossil is found to have a 14c level of 67.0% compared to living organisms. how old is the fossil?

Biology
1 answer:
sp2606 [1]3 years ago
3 0
The half-life  of carbon-14 is equal to 5730 years. The amount of substance with half-life h at any time t is equal to,
                       At = (Ao) x (1 - 0.5)^(t/h)
Substituting, 
                    At/Ao = 0.67 = 0.5^(t/5730)
The value of t from the equation is 3310.6 years. 
You might be interested in
What are the chareristics of a bone
mojhsa [17]
They are lightweight yet strong and hard, and serve multiple functions. Bone tissue (osseous tissue) is a hard tissue, a type of dense connective tissue. It has a honeycomb-like matrix internally, which helps to give the bone rigidity. Bone tissue is made up of different types of bone cells.

hope this helps. :)
4 0
3 years ago
Predators are considered a(n) _________ limiting factor PLEASE HELP!  abiotic                        external                   
kirill115 [55]
External i would say
4 0
3 years ago
Read 2 more answers
A(n) ___ reaction feels hot to the touch since energy is being released and a(n) __ reaction feels cold to the touch since energ
goldfiish [28.3K]

Answer:

b a

Explanation:

i did this test in school

4 0
3 years ago
What is uncoiled stringy DNA called
Bond [772]

Answer: chromatin

Explanation:

What is uncoiled, stringy DNA called? It is called chromatin. How many pieces of chromatin does a human diploid cell have? Human diploid cells have 46 pieces of chromatin.

8 0
3 years ago
Please answer ASAP!! Will give BRAINLIEST to Right ASNWER
Nimfa-mama [501]

Answer: I'm pretty sure it's the first one

Explanation: I don't know for sure but I'm pretty sure when I learned it they said that extrusive is above ground and intrusive is below ground. Don't take my word for 100% though

8 0
2 years ago
Other questions:
  • Topic: Diffusion(science) <br> Help me! Thanks :))
    6·1 answer
  • Why are some fossils found in lower layers and not upper layers?​ (give 2 answers of why this is)
    11·1 answer
  • A bowhunter's quarry is antelope, deer, black bear, or other big game of similar size or smaller. Which shot offers a good chanc
    9·2 answers
  • The diamond-shaped decal that identifies a cng car will not be found on the _______________.
    14·2 answers
  • The plasma membrane is composed of a phospholipid bilayer with embedded proteins what is one of the functions of the embedded pr
    6·1 answer
  • What is the effect of expressing a dominant active form of the small GTPase Rac1 in a human neutrophil?
    8·1 answer
  • Animal chAracteristics<br> List
    5·1 answer
  • PLS HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! THIS ONE IS FOR 20 POINTS. I will also give you the brainiest points?!!!!!!!!!!!wha
    10·1 answer
  • How do plants reproduce? <br><br> 1. Sexually<br> 2. Asexually
    8·1 answer
  • sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform differe
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!