A piece of wood discovered in an archaeological dig was found to have lost 62% of it's carbon14. Carbon14 has a halflife of 5630 years. Determine it's age.
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Alg2
A piece of wood discovered in an archaeological dig was found to have lost 62% of it's carbon14. Carbon14 has a halflife of 5630 years. Determine it's age. 
Chemistry
A piece of wood found in an ancient city has a carbon14 to carbon12 ratio that is oneeighth the carbon14 to carbon12 ratio of a tree growing nearby. How old is the piece of wood? (The halflife of carbon14 is 5,715 years.) 
Science
Carbon14 has a halflife of about 5,600 years. Archaeologists analyze a piece of wood found at an ancient village site and determine that, of he initial 100 grams of Carbon14 in the wood, onl 3.125 grams are left. How old is the wood? 
physics
A wooden artifact is found in an ancient tomb. Its carbon14 activity is measured to be 60.0% of that in a fresh sample of wood from the same region. Assuming the same amount of carbon14 was initially present in the wood from which the artifact was made, determine the age of ... 
math
An artifact was found and tested for its carbon14 content. If 76% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? (Carbon14 has a halflife of 5,730 years.) 
math
An artifact was found and tested for its carbon14 content. If 79% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? (Carbon14 has a halflife of 5,730 years.) 
Algebra
An artifact was found and tested for its carbon14 content. If 74% of the orginal carbon14 was still present, what is its probable age (to the nearest 100 years)? (Carbon14 has a half life of 5730 years). 
Algebra
An artifact was found and tested for its carbon14 content. If 75% of the original carbon14 was still present what is its probable age to the nearest 100 years?. carbon 14 has a halflife of 5,730 years. 
algebra
An artifact was found and tested for its carbon14 content. If 75% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? (Carbon14 has a halflife of 5,730 years.) thank you 
Algebra
An artifact was found and tested for its carbon14 content. If 76% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? (Carbon14 has a halflife of 5,730 years.) 
Math
An artifact was found and tested for its carbon14 content. If 88% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. ? yr 
math
An artifact was found and tested for its carbon14 content. If 88% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
Algebra
An artifact was found and tested for its carbon14 content. If 77% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
algebra
An artifact was found and tested for its carbon14 content. If 79% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
math
An artifact was found and tested for its carbon14 content. If 81% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. yr 
algebra
An artifact was found and tested for its carbon14 content. If 84% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
math
An artifact was found and tested for its carbon14 content. If 76% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
algebra
An artifact was found and tested for its carbon14 content. If 84% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
math
An artifact was found and tested for its carbon14 content. If 83% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
math
An artifact was found and tested for its carbon14 content. If 83% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
Can some guide me
An artifact was found and tested for its carbon14 content. If 71% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? (Carbon14 has a halflife of 5,730 years.) 
College Math
An artifact was found and tested for its carbon14 content. If 88% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
Homework test
An artifact was found and tested for its carbon14 content. If 70% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 
applied algebra
An artifact was found and tested for its carbon14 content. If 74% of the original carbon14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon14 has a halflife of 5,730 years. 1 yr 
science
my teacher gave us this question and im lost. Anthropologists have found an old campsite in a remote location. After calculating the carbon14 in the wood, they determine that there is 1/8 of the original material left. How many halflives of carbon14 have decayed and how ... 
chemistry
A wooden object from a prehistoric site has a carbon14 activity of 10 counts per min.(cpm) compared to 40 cpm for new wood. If carbon14 has a half life of 5730 years what is the age of the wood? Please get me started. Thank you 
Physics
(a)A fossilised tree was tested and contains 10 grams of Carbon14. Given that there was 12 grams of Carbon14 present when it died, determine the age of the fossil? Half life of Carbon14 is 5700 years. (b)How much Carbon14 will be present in the sample 100 years from now? 
Physics
(a)A fossilised tree was tested and contains 10 grams of Carbon14. Given that there was 12 grams of Carbon14 present when it died, determine the age of the fossil? Half life of Carbon14 is 5700 years. (b)How much Carbon14 will be present in the sample 150 years from now? 
Intermediate Maths
(a)A fossilised tree was tested and contains 10 grams of Carbon14. Given that there was 12 grams of Carbon14 present when it died, determine the age of the fossil? Half life of Carbon14 is 5700 years. (b)How much Carbon14 will be present in the sample 100 years from now? ... 
ChemB
The activity of carbon 14 in living tissue is 15.3 disintegrations per minute per gram of carbon. The limit for reliable determination of age is based on carbon 14 is .10 disintegration per min per gram of carbon. Calculate the max age of a sample that can be dated accurately ... 
Final Maths
(a)A fossilised tree was tested and contains 10 grams of Carbon14. Given that there was 12 grams of Carbon14 present when it died, determine the age of the fossil? Half life of Carbon14 is 5700 years. (b)How much Carbon14 will be present in the sample 100 years from now? ... 
physical science
a scientist found a fossilized bison. using Carbon14 dating, she found that the fossil was about 45,840 years old. Carbon14 has a halflife of 5730 years. how many halflives have passed? 
algebra
Scientists can determine the age of ancient objects by a method called radio carbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope 14C of carbon with a halflife of about 5710 years. Vegetation absorbs carbon dioxide ... 
Calculus
A fragment of bone is discovered to contain 20% of the usual carbon14 concentration. Estimate the age of the bone to the nearest hundred years, given that Carbon1 is radioactive with halflife of 5730 years and the rate of decay is given by the following differential ... 
Chem
Living organisms give a Carbon14 decay rate of 15.3 counts/min for each gram of carbon in the sample. A sample of bristle cone pine wood has a decay rate of 3.20 counts/min per gram of carbon. Calculate the age of the wood from the radiochemical evidence. Carbon14 has a half... 
Calculus
The amount of carbon14 still present in a sample after t years is given by the function where C0 is the initial amount. Estimate the age of a sample of wood discovered by an archeologist if the carbon level in the sample is only 18% of its original carbon14 level. 
Math
The halflife of carbon14, which is used in dating archaeological finds, is 5730 yr. Assume that 100% of the carbon14 is present at time 0 yr, or x=0. Write the equation that expresses the percentage of carbon14 remaining as a function of time. 
chem
Can someone please help me with the following questions? 1:Suppose you were given an ancient wooden box. If you analyze the box for carbon14 activity and find that it is 50% of that of a new piece of wood of the same size, how old is the wood in the box? 2:How old is an ... 
Chemistry
A sample of charcoal is found to have only 1/8th of Carbon14. Halflife of Carbon14 is 5730yrs, what is the age of the charcoal? 
Calculus 2 (Differentiate & Decay Problem)
I have two problems I need help on, can someone show and explain step by step how to do the problems? For #1, how would you differentiate and solve the initalvalue problem? For #2, I don't understand what I am doing wrong with the problem..I am sure it is a decay problem(?) ... 
physics
You are on an archaeological dig and discover a strange artifact. It is a utensil that appears to be carved out of an elephant's tusk You analyze it and discover that it has 0.625 the amount of carbon14 you would find in a living specimen. 1.How many halflives has the ... 
college algebra
The halflife of carbon14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only 73% of the carbon14 expected in living matter, when did the tree die? 
Calculus
Skeletal remains had lost 81% of the C14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon14 is 5730 years. Round your answer to the nearest whole number.) yr 
calculus
Skeletal remains had lost 70% of the C14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon14 is 5730 years. Round your answer to the nearest whole number.) 
Math
Skeletal remains had lost 84% of the C14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon14 is 5730 years. Round your answer to the nearest whole number.) 
Chemistry
The halflife for radioactive decay of 14C is 5730 years (it emits βparticles with energy of 0.16 MeV). An archaeological sample contained wood that had only 72% of the 14C found in living trees. What is its age? 
Calc II
Carbon14 has a halflife of 5700 years. The charcoal from a tree killed in the volcanic eruption that formed Crater Lake in Oregon contained 59.5% of the carbon14 found in living matter. Approximate the age of Crater Lake. 
Biology
The halflife of Carbon14 is 5730 years. What is the age of a fossil containing 1/16 the amount of Carbon14 of living organisms? Explain your calculation. 
Radioactivity
1. A granite rock is thought to be about 2 billion years old. why is it not possible to determine the age of the Rock using carbon14 dating? 2. A hair sample has 80% of its original carbon14 present. what is the age of the sample? 3. A bone fragment has lost 75% of its ... 
Calculus
An artifact was found with 63.8% of Carbon 14, how old is the mummy, assuming the halflife of Carbon 14 is 5730 years. 
Chemistry
The cloth shroud from around a mummy is found to have a carbon14 activity of 8.1 disintegrations per minute per gram of carbon as compared with living organisms that undergo 15.2 disintegrations per minute per gram of carbon. From the halflife for carbon14 decay, 5715 yr, ... 
science
The halflife of carbon14 is 5730 years. If we start with 10 grams of carbon14, after 5730 years, we will have _____ of carbon14 left. 
science
The halflife of carbon14 is 5730 years. If we start with 10 grams of carbon14, after 5730 years, we will have _____ of carbon14 left. 
Math
A bone is found to have 45% of the original amount of carbon 14. If the half life of carbon is 5600 years, how old is the bone. Would I use the formula N=No e^kt? 
halflife
ok so i got... the half life of carbon14 is 5730 years, the relation c+(1/2)^ N/5730 is used to calc. the concentration, c, in parts per trillion remaining n years after death determine the carbon concentration in a 11460 year old bone. please help :) 
halflife
ok so i got... the half life of carbon14 is 5730 years, the relation c+(1/2)^ N/5730 is used to calc. the concentration, c, in parts per trillion remaining n years after death determine the carbon concentration in a 11460 year old bone. please help :) 
earth science
what would be the chart to use for carbon 14 whcih has a half life of 5730 years and a piece of wood which originally has 12 grams pf radioactive isotope; If the half lives occurred and now has 0.75 grams left? 
Algebra
A mummy discovered in Egypt has lost 46% of its carbon14. Determine its age. 
Physics
Could someone help explain this problem to me . . . Carbon 14 has a halflife of 5700 year, scientist use this fact to determine the age of things made of organic material. Suppose the average page of a book containing aprox. 0.5mg of Carbon 14 is put into a time capsule how ... 
Chemistry
An artifact has a carbon14 to carbon12 ratio that is onefourth the carbon14 to carbon12 ratio of a similar modern object. How old is the artifact? (The halflife of carbon14 is 5,715 years.) 
math: precalculus
You have 5 grams of carbon14; whose halflife is 5730 years. a)Write the rule of the function that gives the amount of carbon14 remaining after x years. b)How much carbon14 will be left after 4,000 years? c)When will there be just 1 gram left? 
chemistry
A 1.00g sample of carbon from a modern source gave 15.3 disintegrations per minute. A sample of carbon from an “old” source gave 920 disintegrations per hour. What is the age of the “old” sample of carbon? The halflife of carbon14 is 5.73×103 year. a. about 34,400 ... 
chemistry
A 1.00g sample of carbon from a modern source gave 15.3 disintegrations per minute. A sample of carbon from an “old” source gave 920 disintegrations per hour. What is the age of the “old” sample of carbon? The halflife of carbon14 is 5.73×103 year. a. about 34,400 ... 
Math
A plant fossil lost 40 % of its carbon14. How old is the fossil? (Halflife of carbon14 is 5730 years.) 
Intro to Astronomy
The halflife of carbon 14, which is commonly used to date organic materials, is 5700 years. What is the minimum age of sample in which less than 1% of the organic carbon 14 is left? 
Math
Cosmic ray bombardment of the atmosphere produces neutrons, which in turn react w/ nitrogen to produce radioactive carbon14. Radioactive carbon14 enters all living tissue through carbon dioxide. As long as it is alive, carbon14 is maintained in the organism at a constant ... 
College Algebra
Carbon14 Dating. Only 10% of the carbon14 in a samll wooden bowl remains. How old is the bowl? Half life of carbon is 5700 years. 
Help Please. Math
By comparing the amount of carbon14 to amount of carbon12, one can determine approx how long ago the organism died. The halflife of carbon14 is 5730 years. Assume the initial quantity of carbon14 is 600 milligrams. the equation is A (t)=600*(.5)^(t) (0,600) (1,300) (2,150... 
Chemistry
What is the famous isotope used in archeological dating? carbon 12 I thought it was carbon 14 yes carbon 14 made an error But if you knew, why are you asking these questions? I need reaasurance, so when I have a test I know the exact answer C14 is ONE of the radioactive ... 
algebra
Use the fact that after 5715 years a given amount of carbon 14 will have decayed to half the original amount to find the exponential decay model for carbon 14. In 1947, earthenware jars containing what was known as the Dead Sea scrolls were found by an Arab Bedouin herdsman. ... 
Physics
Carbon15 has a halflife of 5730 years. As observed from Earth, what would the halflife of carbon15 be if it traveled through space at 25% of the speed of light, relative to Earth? 
physics
The halflife of carbon14 is 5730 years. How much of a 50 g sample of carbon14 is present after 11,460 years? 
physics
If an archaeologist finds an ancient fire pit containing partially consumed firewood and the 14C content of the wood is only 10% of an equal carbon sample from present day tree, what is the age of ancient site. 14 C has half life of 5730 years 
science
The halflife of carbon 14 is 5730 years. if a 1 g sample of old carbon is 1/8 as radioactive as 1 g of a current sample, then the age of the old sample is about ___________years. 22,900 17,200 11,500 716 
Biology
The halflife of carbon14 is 5,700 years. If a sample originally had 26 g of carbon14, how much would it contain after 22,800 years? 
Chemistry
An archeological artifact was subjected to radiocarbon dating. The artifact showed a carbon14 decay rate of 13.8 disintegrations/ min per gram of carbon. Carbon14 has a halflife of 5715 years, and currently living organisms decay at the rate of 15.3 disintegrations/ min per... 
college calculus
the amount of carbon14 in a mammoth's bone is 45% of the amount found in a living organism. How long ago did the mammoth die? the halflife of carbon14 is about 5,730 years. 
Math
Cosmic ray bombardment of the atmosphere produces neutrons, which in turn react with nitrogen to produce radioactive carbon14. Radioactive carbon14 enters all living tissue through carbon dioxide (via plants). As long as a plant or animal is alive, carbon14 is maintained in... 
Physics
A gram of living plant material with Carbon14 , decays at a rate of about 16 disintegrations per minute. When the plant dies, the Carbon14 decays, with a halflife of 5600 years. A gram of the dead plant is found to decay at about 1 disintegration per minute. Calculate the ... 
Calculus Help Please!!! URGENT!!!!
Carbon14 has a halflife of 5700 years. In a living organism, the ratio of radioactive carbon14 to ordinary carbon remains fairly constant during the lifetime of the organism. After the organism’s death no new carbon is integrated into the organism’s remains, so the ... 
Physics
The isotope carbon14, 146C, is radioactive and has a halflife of 5730 years. If you start with a sample of 1000 carbon14 nuclei, how many will still be around in 22920 years? I got 62.5 atoms, am I correct?? Thank you!! 
calculus
Carbon14 is a radioactive substance produced in the Earth's atmosphere and then absorbed by plants and animals on the surface of the earth. It has a halflife (the time it takes for half the amount of a sample to decay) of approximately 5730 years. Using this known piece of ... 
Chem/Physics
1. The halflife for the (firstorder) radioactive decay of 14C is 5730 yr (it emits a β ray with an energy of 0.16 MeV). An archaeological sample contained wood that had only 72 percent of the 14C found in living trees. What is its age? I got 500years? 2. The temperature... 
algebra
carbon 14 has a hlf life of 5700 years. scientists use this fact to determine the age of things made up of organic material. Suppose the average page of a book containing approximitly .5 mg og carbon 14 was put into a time capsule. How much carbon14 will each page contain ... 
Pre calculus
at an archaeological site remains of plant material will found to have 28.9% of the amount of carbon14 in a living sample. What was the approximate age of the plant material? 
math
Suppose that drilling into what was once a lake bottom produces a piece of wood which, according to its mass, would have contained 5 nanograms (5 billionths of a gram) of carbon14 when the wood was alive. Use the fact that this radioactive carbon decays continuously at a rate... 
Chemistry
If 100.0 g of carbon14 decays until only 25.0 g of carbon is left after 11,460 y, what is the halflife of carbon14? 
Math
A fossilized leaf contains 21% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the halflife of carbon 14. 
ChemB
measurements of carbon 14 taken from linen wrappings of the book of isaiah from the dead sea scrolls indicate that the scrolls contain 79.5% of the carbon 14 expected in living tissue. how old are these scrolls if the half life of carbon 14 is 5730 years? All radioactive decay... 
Algebra 2
Carbon Dating: Use the formula y= ae^.00012t where a is the initial amount of carbon14 , t is the number of years ago the animal lived, and y is the remaining amount after t years how old is a fossil remain that has lost 95% of its carbon14 
Algebra 2/ Chemistry?
Carbon Dating: Use the formula y= ae^.00012t where a is the initial amount of carbon14 , t is the number of years ago the animal lived, and y is the remaining amount after t years how old is a fossil remain that has lost 95% of its carbon14 
Calc
Set up an exponential function to model each real world situation then use it to find the requested values. The halflife of Carbon 14 is about 5700 years. You begin with 800 grams of this isotope. 1) Function: 2) How much Carbon 14 is there after: a) 11,400 years b) 45,000 years 
math
1.The remains of an old campﬁre are unearthed and it is found that there is only 80% as much radioactive carbon14 in the charcoal samples from the campﬁre as there is in modern living trees. If the halflife of carbon 14 is 5730 years, how long ago did the camp... 
Chem 2 help
what is the significance of calculating the half life of a reaction? How has the concept of halflife been used to develop the method of carbon dating? If a substance does not contain the element carbon can the method of carbon dating be used to date the artifact? Thanks! 
physics
How do I do this ? Calculate the age of a plant sample that shows about oneeigth of the carbon 14 of a living sample. The halflife of carbon14 is about 5760a I don't have the notes on how to do this one... Help 
Physicr
A 10 kg sample from a living plant has actiuity 30 000 Bq due to Carbon14. A 500g sample of the same type of plant but dead has activity 1 000 Bq. Calculate the age of the dead sample given that the half life of Carbon14 is 5568 years 
College Algebra
Only 34% of the carbon14 in a wooden bowl remains. How old is the bowl? (Carbon14 has a halflife of 5,700 years.) 
College Algebra
Only 27% of the carbon14 in a wooden bowl remains. How old is the bowl? (Carbon14 has a halflife of 5,700 years.) 
math
only 5% of the carbon14 in a small wooden bowl remains , how old is the bowl? Hint, halflife for carbon –14 us 5730 years 
math
Carbon14 has a halflife of 5730 years. How long will it take 17 grams of carbon14 to be reduced to 10 grams? Round to the nearest integer.