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Strike441 [17]
3 years ago
13

Strontium-147 cut into pieces what would be the half -life of each piece?

Geography
1 answer:
zalisa [80]3 years ago
5 0

Answer:

2.62 years

Explanation:

The half life of a material is the time taken for half of the number of radioactive atoms in a radioactive material to remain.

If a radioactive material is cut into pieces, each piece has the same half life as the whole material.

Hence, if Strontium-147 is cut into pieces, each piece will have a half life of 2.62 years, just as the whole material.

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Answer: Two hydrogen nuclei come together to produce one helium nucleus and two protons, and energy is released.

Explanation:

All stars (including the Sun) at birth begin to fuse two hydrogen nuclei to form helium through nuclear fusion.  

In this sense, nuclear fusion is the union of two light atoms, releasing energy in the process, which is the cause of the great luminosity of a star. Especifically, the hydrogen nuclei will begin to fuse, generating helium nuclei in the process and releasing huge amounts of energy.

To unerstand it better:

To shine, the stars transform their hydrogen into helium by means of nuclear fusion. When at half of its life a star is without hydrogen, the nucleus becomes entirely helium and the star declines, becoming colder and brighter due to the energy generated by the nuclear reactions, then the star begins to contract.  

Nevertheless, if the star is bigger, this helium will be also consumed and the nucleus transformed in Carbon, then in Oxigen, and so on. Being the last transformation Iron until the star delivers all its energy.

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3 years ago
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Explain the formation of a river delta
sesenic [268]

Answer:

A river delta is a landform created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot carry away the supplied sediment.

6 0
2 years ago
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What is the name for the level of crop output from a given level of input?
Goryan [66]

<u>Answer: </u>

Subsistence farming is the level of crop output from a given level of input.

<u>Explanation:</u>

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  • For example: nomadic people raise a cow to provide milk to their own family.
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Productivity of an ecosystem is best determined by the
nika2105 [10]
Pretty sure its c. From the text you provided me
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3 years ago
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