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3 years ago

What is intercostal trade

Geography

1 answer:

Natasha2012 [34]3 years ago

8 0

Intercostal trade means distinct sense to include water transportation between ports of the United.

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If a star is able to stabilize after there is no more hydrogen in its core, then it is now fusing helium nuclei together in a re

avanturin [10]

Answer: The correct answer is Option b.

Explanation:

Nuclear fusion reaction is defined as the reaction in which lighter nuclei combine together to form a single heavier nuclei.

Another name for helium nuclei is alpha particle.

For the given options:

Option a: The CNO cycle

This cycle is named as carbon-nitrogen-oxygen cycle. In this cycle, carbon absorbs a proton to form nitrogen which further absorbs a photon to form oxygen. Thus, helium particles are not getting fused in this process.

Option b: The triple alpha process

This process is a set of nuclear reaction in which 3 alpha or helium nuclei combine together to form carbon nucleus.

The equation representing the fusion process follows:

$_2^4\textrm{He}+_2^4\textrm{He}\rightarrow _4^8\textrm{Be}+\gamma\\\\_4^8\textrm{Be}+_2^4\textrm{He}\rightarrow _6^{12}\textrm{C}+\gamma$

Option c: Photo dissociation

This is defined as the process in which a chemical compound is broken down by photons. Thus, helium particles are not getting fused in this process.

Option d: The proton-proton chain

This process is a set of nuclear fusion reactions by which stars convert hydrogen nucleus to helium nucleus. The chemical reactions for this process are:

$_1^1\textrm{H}+_1^1\textrm{H}\rightarrow _1^2\textrm{H}+_{+1}^0\textrm{e}+\text{energy}\\\\_1^2\textrm{H}+_1^1\textrm{H}\rightarrow _2^3\textrm{He}+\text{energy}\\\\_2^3\textrm{He}+_1^1\textrm{H}\rightarrow _2^4\textrm{He}+_{+1}^0\textrm{e}+\text{energy}$

Here, fusion of protons takes place.

Hence, the correct answer is Option b.

7 0

4 years ago

The north atlantic current sinks just south of the coast of ___________

stealth61 [152]

The answer is Antarctica

6 0

4 years ago

Read 2 more answers

Which country is located on the iberian peninsula – portugal or the netherlands?

ANEK [815]

Portugal
It is located in southwestern Europe and is formed primarily by Spain, Portugal, Andorra and small parts of France

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3 years ago

1. The contact between the granite and the gneiss represents what type of contact? a. intrusive contact. b. fault (tectonic) con

gulaghasi [49]

Answer:

hello your question has some missing diagrams attached below is the missing diagram

1) Intrusive contact ( A )

2) Gneiss ( D )

3) Principle of Cross-cutting relationship ( D )

4) Principle of Inclusion ( D )

Explanation:

1) The contact between the granite and the Gneiss represents an Intrusive contact

2) The oldest rock unit in the cross-section is Gneiss

3) The principle that allows for the distinguishing of the age relationship between Gneiss and Diorite is : Cross-cutting relationship

4) The principle that allows for the distinguishing of the age relationship between the Gneiss and the granite is : Principle of inclusion

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3 years ago

Which equation is correct regarding the measure of ∠1?

timurjin [86]

Answer:

its c m∠1 = (b – d)

Explanation:

I just took the test

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3 years ago

What is intercostal trade​

What is intercostal trade