Why Is Hydrogen Burning the Main Energy Source for Main-Sequence

question 25

Multiple Choice

Why is hydrogen burning the main energy source for main-sequence stars?

• A) Hydrogen is the most common element in stars.
• B) Hydrogen nuclei have the smallest positive charge.
• C) Hydrogen burning is the most efficient of all fusion or fission reactions.
• D) Hydrogen can fuse at temperatures lower than other elements.
• E) All these are valid reasons.

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Definitions:

Impairment Loss

A financial write-down in book value due to impairment, reflecting a decrease in the recoverable amount of an asset beyond its current carried cost.

Consolidated Patents

Patents owned by a parent company and its subsidiaries that are combined for reporting purposes on consolidated financial statements.

Goodwill Impairment

This occurs when there is evidence that the value of goodwill has declined permanently beyond its recoverable amount, necessitating a write-down in its book value.

Amortization

The process of reducing the cost of a tangible or intangible asset through systematic, periodic deductions over its useful life.