When Does a Star Achieve Hydrostatic Equilibrium

question 314

Multiple Choice

When does a star achieve hydrostatic equilibrium?

• A) when it becomes a main-sequence star
• B) when it leaves the main sequence
• C) when it becomes a protostar
• D) This question has different answers for stars of different masses. Massive stars never achieve equilibrium; small stars achieve hydrostatic equilibrium as soon as they reach the main sequence.

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Definitions:

Auricle

The outer part of the ear that captures sound waves and directs them into the ear canal.

Rhegmatogenous

Pertains to a type of retinal detachment that occurs due to a tear or break in the retina, allowing fluid to accumulate under the retina.

Exudative

Pertaining to any fluid that filters from the circulatory system into lesions or areas of inflammation.

Traction

The application of a pulling force to a part of the body to realign or immobilize bones and joints.