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
bazaltina [42]
3 years ago
10

The ratio of carbon-14 to nitrogen-14 is an artifact is 1:3. Given that half-life of carbon-14 is 5730years, how old is the arti

fact?
Physics
1 answer:
dusya [7]3 years ago
5 0

Answer:

9155 years old

Explanation:

We use the following expression for the decay of a substance:

N = N_0\,\,e^{-k*t}

So we first estimate the value of k knowing that the half-life of the C14 is 5730 years:

N = N_0\,\,e^{-k*t}\\N_0/2=N_0\,\,e^{-k*5730}\\1/2 = e^{-k*5730}\\ln(1/2)=-k*5730\\k= 0.00012

so, now we can estimate the age of the artifact by solving for"t" in the equation:

1/3=e^{-0.00012*t}\\ln(1/3)= -0.00012*t\\t=9155. 102

which we can round to 9155 years old.

You might be interested in
What is the unit and tool to measure the volume of a plastic block?
Marina CMI [18]
Unit is m^3 or metres cubed. You need to multiply the three dimensions of the block to get the volume.
A ruler can be used to measure the edges.
8 0
3 years ago
In some plants, the pistils don’t Form until a few days after the stamens do.How might this keep a plant from self pollinating
KATRIN_1 [288]

For a flower to be pollinated, pollen from an anther (which is located at the top of the stamen) needs to reach a stigma (at the top of the pistle.) Some plants are genetically capable of pollinating themselves if their own pollen reaches their own stigma; some plants are not capable of self pollination under any circumstances.

For plants that can genetically self pollinate, but would prefer not to, they can avoid this by having their pistil and pollen/stamens mature at different times. If the stamens mature first, the pollen will be dispersed by animals or wind or whatever dispersal mechanism it relies on. Then by the time the pistil is ready to be pollinated, there is no pollen left in that flower to land on the stigma.

3 0
3 years ago
A bicyclist starts at rest and speeds up to 30 m/s while accelerating at 4 m/s^2. Determine the distance traveled.
raketka [301]

Answer:

Distance, d = 112.5 meters

Explanation:

Initially, the bicyclist is at rest, u = 0

Final speed of the bicyclist, v = 30 m/s

Acceleration of the bicycle, a=4\ m/s^2

Let s is the distance travelled by the bicyclist. The third equation of motion is given as :

v^2-u^2=2as

s=\dfrac{v^2-u^2}{2a}

s=\dfrac{(30)^2}{2\times 4}

s = 112.5 meters

So, the distance travelled by the bicyclist is 112.5 meters. Hence, this is the required solution.

6 0
2 years ago
How would the attractive force between two spheres change if the mass of one sphere was doubled?
Dominik [7]
The force of attraction between two objects can be illustrated using Newton's Law of Universal Gravitation.
The relation between the different parameters is shown in the attached image.

Now, from the relation, we can deduce that the force between the two objects is directly proportional to the masses of the two objects.

This means that, if the mass of one object is doubled, then the force between the two objects will also be doubled.

8 0
2 years ago
What is the thermal energy of an object?
Vedmedyk [2.9K]
The total kinetic and potential energies
3 0
3 years ago
Other questions:
  • Which of the following objects have gravitational potential energy?
    12·2 answers
  • A boy jumps on his bed. when his feet push the bed down, what is the reaction force
    15·1 answer
  • Juliana walks 45 meters East, 45 meters south and 45 meters north. What is her resultant displacement?
    12·1 answer
  • Which of the following is an example of a primary source?
    15·1 answer
  • A falcon is hovering above the ground, then suddenly pulls in its wings and begins to fall toward the ground. Air resistance is
    12·1 answer
  • A pizza delivery person drives 3 miles North then 5 miles West and then 3 miles South to deliver a pizza. What is the person's d
    14·2 answers
  • A ball is dropped from the roof of a building. Points A, B, C, and D in the diagram below represent positions of the ball as it
    5·1 answer
  • Which frequency would be the third harmonic in a series for an open-pipe resonator if the fundamental is 440 Hz
    5·1 answer
  • Rutherford tracked the motion of tiny, positively charged particles shot through a thin sheet of gold foil. Some particles trave
    11·1 answer
  • What is the wave where the oscillation is perpendicular to the direction<br> of motion.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!