A Stellar Core of About 2 Solar Masses Collapses Inward

question 149

Multiple Choice

A stellar core of about 2 solar masses collapses inward in a supernova explosion. What is the result of this collapse?

• A) neutron star supported from further collapse by neutron-degeneracy pressure
• B) black hole with infinitely small radius because nothing can prevent such a mass from collapsing completely
• C) star a little smaller than the size of the Sun supported from further collapse by gas pressure from the hot interior of the star
• D) white dwarf star supported from further collapse by degenerate-electron pressure

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Definitions:

Orientation

Orientation refers to the awareness of oneself in relation to time, place, and identity, often assessed in cognitive and neurological examinations.

Sternocleidomastoid Muscle

A muscle in the neck that runs from the sternum and clavicle to the mastoid process of the temporal bone, involved in the rotation and flexion of the head.

Sternal End

The end of a bone that is closest to the sternum, often referring to the ends of the ribs or the clavicle.

Insertion

The point or mode of attachment of a skeletal muscle to the bone or other body part it moves.