The amount of carbon 14 remaining in a sample that originally contained A grams is given by C(t) = A(0.999879)t where t...
The amount of carbon 14 remaining in a sample that originally contained A grams is given by
C(t) = A(0.999879)t
where t is time in years. If tests on a fossilized
skull reveal that 99.89% of the carbon 14 has decayed, how old, to
the nearest 1,000 years, is the skull? HINT [See Example 4.]
_____ yr
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The amount of carbon 14 remaining in a sample that originally contained A grams is given by C(t) = A(0.999879)t where t...
An artifact originally had 16 grams of carbon-14 present. The decay model A = 16 e...
An artifact originally had 16 grams of carbon-14 present. The decay model A = 16 e -0.000121t describes the amount of carbon-14 present after t years. Use the model to determine how many grams of carbon-14 will be present in 7367 years. The amount of carbon-14 present in 7367 years will be approximately N grams. (Round to the nearest whole number.)
23) In the formula A(O)- Agekt, A is the amount of radioactive material remaining from an...
23) In the formula A(O)- Agekt, A is the amount of radioactive material remaining from an initial am a given time t, and k is to e decays at a rate of 0.3% annually. Determine hehalf ife of this isotope, to the nearest year is a negative constant determined by the nature of the material. A certain radioactive A) 231 yr B) 100 yr C) 167 y D) 2yr 24) The half-life of an element is 5.0 x і012 yr....
please give the correct answer An artifact originally had 16 grams of carbon-14 present. The decay...
please give the correct answer
An artifact originally had 16 grams of carbon-14 present. The decay model A - 16€ -0.000121 describes the amount of carbon-14 present after tyears. Use the model to determine how many grams of carbon-14 will be present in 8185 years. The amount of carbon-14 present in 8185 years will be approximately grams. (Round to the nearest whole number)
The amount of carbon-14 present in animal bones after t years is given by P(t) =...
The amount of carbon-14 present in animal bones after t years is given by P(t) = Poe -0.00012! A bone has lost 36% of its carbon-14. How old is the bone? The bone is years old. (Round to the nearest integer as needed.)
The amount of carbon-14 present in animal bones t years after the animal's death is given...
The amount of carbon-14 present in animal bones t years after the animal's death is given by -0.000120971 P(t) = Po e How old is an ivory tusk that has lost 20% of its carbon-14? The ivory tusk is (years old. (Round to the nearest integer as needed.)
The percentage P of a radioactive carbon-14 remaining in a fossil after t years is given...
The percentage P of a radioactive carbon-14 remaining in a fossil after t years is given by P = 100(0.5) 5700 Suppose a fossil contains 45.3% of the carbon-14 that the organism contained when it was alive. Estimate the age of the fossil.
14. The amount of money in a savings account is given as A(t)-500(1.0s), where r is...
14. The amount of money in a savings account is given as A(t)-500(1.0s), where r is in years. What is the monthly interest rate to the nearest hundredth of a percent?
A scientist begins with 250 grams of a radioactive substance. After 250 minutes, the sample has...
A scientist begins with 250 grams of a radioactive substance. After 250 minutes, the sample has decayed to 36 grams. Write an exponential equation f(t) representing this situation. (Let f be the amount of radioactive substance in grams and t be the time in minutes.) f(t) 250e 0.0087t x To the nearest minute, what is the half-life of this substance? 89 min Use the model for continuous exponential decay, y = Ao e-kt, where y is the amount of radioactive...
A sample of 400g of radioactive lead-210 decays to polonium-210 according to the function A(t)=400e−0.032t, where...
A sample of 400g of radioactive lead-210 decays to polonium-210 according to the function A(t)=400e−0.032t, where t is time in years. Find the amount of radioactive lead remaining after (a) 4 yr, (b) 6 yr, (c) 15yr. (d) Find the half-life.
If a sample of C-14 initially contains 1.7 mmol of C-14, how many millimoles will be...
If a sample of C-14 initially contains 1.7 mmol of C-14, how many millimoles will be left after 2260 years? The half-life for the radioactive decay of C-14C-14 is 5730 years. Part A Part complete How long will it take for 25% of the C-14C-14 atoms in a sample of C-14C-14 to decay? Express your answer using two significant figures. View Available Hint(s) tt = 2400 yearsyears SubmitPrevious Answers Correct First, the rate (or decay) constant, kk, for the first-order...
An artifact originally had 16 grams of carbon-14 present. The decay model A = 16 e -0.000121t describes the amount of carbon-14 present after t years. Use the model to determine how many grams of carbon-14 will be present in 7367 years. The amount of carbon-14 present in 7367 years will be approximately N grams. (Round to the nearest whole number.)
23) In the formula A(O)- Agekt, A is the amount of radioactive material remaining from an initial am a given time t, and k is to e decays at a rate of 0.3% annually. Determine hehalf ife of this isotope, to the nearest year is a negative constant determined by the nature of the material. A certain radioactive A) 231 yr B) 100 yr C) 167 y D) 2yr 24) The half-life of an element is 5.0 x і012 yr....
please give the correct answer
An artifact originally had 16 grams of carbon-14 present. The decay model A - 16€ -0.000121 describes the amount of carbon-14 present after tyears. Use the model to determine how many grams of carbon-14 will be present in 8185 years. The amount of carbon-14 present in 8185 years will be approximately grams. (Round to the nearest whole number)
The amount of carbon-14 present in animal bones after t years is given by P(t) = Poe -0.00012! A bone has lost 36% of its carbon-14. How old is the bone? The bone is years old. (Round to the nearest integer as needed.)
The amount of carbon-14 present in animal bones t years after the animal's death is given by -0.000120971 P(t) = Po e How old is an ivory tusk that has lost 20% of its carbon-14? The ivory tusk is (years old. (Round to the nearest integer as needed.)
The percentage P of a radioactive carbon-14 remaining in a fossil after t years is given by P = 100(0.5) 5700 Suppose a fossil contains 45.3% of the carbon-14 that the organism contained when it was alive. Estimate the age of the fossil.
14. The amount of money in a savings account is given as A(t)-500(1.0s), where r is in years. What is the monthly interest rate to the nearest hundredth of a percent?
A scientist begins with 250 grams of a radioactive substance. After 250 minutes, the sample has decayed to 36 grams. Write an exponential equation f(t) representing this situation. (Let f be the amount of radioactive substance in grams and t be the time in minutes.) f(t) 250e 0.0087t x To the nearest minute, what is the half-life of this substance? 89 min Use the model for continuous exponential decay, y = Ao e-kt, where y is the amount of radioactive...
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