Engineering, 06.03.2020 23:39, hstover496

The half-life of a radioactive substance is the time it takes to decay by
one-half. The half-life of carbon 14, which is used for dating previously
living things, is 5500 years. When an organism dies, it stops accumulating
carbon 14. The carbon 14 present at the time of death decays with time.
Let C(t)/C(0) be the fraction of carbon 14 remaining at time t. In
radioactive carbon dating, scientists usually assume that the remaining
fraction decays exponentially according to the following formula:
C(t)C(0)=e−bt

a. Use the half-life of carbon 14 to nd the value of the parameter b, and
plot the function.
b. If 90 percent of the original carbon 14 remains, estimate how long ago
the organism died.
c. Suppose our estimate of b is off by ±1 percent. How does this error
affect the age estimate?

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, leomessifanboy678

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody

Answers: 2

continue

Engineering, 04.07.2019 18:10, redrosesxx

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

Answers: 3

continue

Engineering, 04.07.2019 18:10, wyattlb97

Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?

Answers: 3

continue

Engineering, 04.07.2019 18:10, krystabrewer3

What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information

Answers: 3

continue

Do you know the correct answer?

The half-life of a radioactive substance is the time it takes to decay by
one-half. The half-l...