Physics, 26.08.2019 07:30 eddiecas

How so scientist use radioactive decay to date fossils and artifacts

Answers: 1

Show answers

Answers

The most important example of radioactive decay used to date fossils and artifacts is the decay of Carbon-14.

Carbon-14 is constantly being created in the atmosphere, and it is constantly taken by all living organisms by heating/breathing. At the same time, carbon-14 also decays, so that in living organisms the amount of carbon-14 remains constant. However, when the organism dies, it does not take anymore carbon-14 from the environment, so the amount of carbon-14 starts to decrease according to a precise rule.

Carbon-14 has a half-life of 5730 years: this means that after this time, the amount of carbon-14 left in the dead organism is half the initial amount. Based on this fact, it is possible to infer the age of a fossil by measuring the amount of carbon-14 left. The relationship between the amount of Carbon-14 left at time t, N(t), and the amount of carbon-14 initially present in the fossil is given by
$N(t)=N_0 e^{-t/t_{1/2}}$
where $t_{1/2}$ is the half life of carbon-14. By measuring N(t) and by knowing N_0

, it is possible to calculate t, the age of the fossil.

Answer from: Quest

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.

Answer from: Quest

Answer is true. because the sensory memory it can also have a fraction of a second before the information is lost. hope it .

Another question on Physics

Physics, 22.06.2019 05:10

Which best represents the law of conservation of mass ?

Answers: 3

Answer

Physics, 22.06.2019 10:00

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

Answers: 1

Answer

Physics, 22.06.2019 21:30

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.

Answers: 1

Answer

Physics, 22.06.2019 23:30

The power exerted by a muscle is the product of the force exerted and the velocity of contraction. the area of which of these shaded regions represents the power exerted while a weight is lifted at maximum speed?

Answers: 2

Answer

You know the right answer?

How so scientist use radioactive decay to date fossils and artifacts...

Questions