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Sergio039 [100]
3 years ago
8

What two things must be true about a sample in order to date it via radiocarbon dating by evaluating the decay of carbon-14

Physics
1 answer:
natka813 [3]3 years ago
6 0

Carbon -14 is a dating method that is applicable to only samples of organic origin which are less than 50,000 years old.

When living things contain carbon- 14. Carbon - 14 is a radioactive isotope of carbon that decays by beta emission. As long as a plant or animal is alive, there is a balance between its intake and output of carbon -14.

However, when the plant or animal dies, this carbon - 14 begins to decay. The half life of carbon - 14 is 5700 years and it can be used to measure the age of materials or organic origin that are less than 50,000 years old.

Learn more: brainly.com/question/14281129

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What is sunlight composed of
san4es73 [151]

Answer:

Roughly three quarters of the Sun's mass consists of hydrogen (~73%); the rest is mostly helium (~25%), with much smaller quantities of heavier elements, including oxygen, carbon, neon, and iron. The Sun is a G-type main-sequence star (G2V) based on its spectral class.

Explanation:

5 0
3 years ago
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HURRY!!!!! Which change of state is shown into the model?
nadezda [96]

Option (B) is correct. The process shown in the model is the process of DEPOSITION.

Explanation:

The first container shows the molecules of the substance present inside it at a fairly large distance from one another whereas the second container, the molecules of the substance are very close to each other.

This shows that the substance in the first container is gaseous in nature whereas the substance in the second container is solid in nature as its molecules are closely packed.

Therefore, it shows the phase transition of a substance from gaseous sate to the solid state. The process of conversion of a gas directly into a solid is termed as deposition. This process is the opposite of the Sublimation in which the solid gets directly converted into a gas. Thus, the process is also termed as desublimation.

Thus, Option (B) is correct. The process shown in the model is the process of DEPOSITION.

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Answer Details:

Grade: High School

Subject: Physics

Chapter: States of matter

Keywords:

Sublimation, phase transition, solid, gas, molecules, distance, deposition, freezing, boiling, container, second.

7 0
3 years ago
The refractive index is...?​
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The metal ions in iron are held together by
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Metals are giant structures of atoms held together by metallic bonds. “Giant” implies that large but variable numbers of Atoms are involved - depending on the size of the bits of metal. most metals are close packed - that is, they fit as many items as possible into the available volume.
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True or false the hotter the star the higher is absolute magnitude?
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true

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