In a White Dwarf, What Is the Source of Pressure

question 91

Multiple Choice

In a white dwarf, what is the source of pressure that halts its contraction as it cools?

• A) thermal pressure of the extremely hot gas
• B) electrons packed so closely that they become incompressible
• C) neutrons that resist being pressed further together
• D) carbon nuclei that repel each other strongly because they each contain six protons
• E) rapid rotation

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Definitions:

Masseter

A facial muscle that plays a major role in the chewing of food by elevating the mandible (lower jaw).

Extensor Hallicus Longus

A muscle in the leg that extends the big toe and aids in dorsiflexion of the foot.

Big Toe

The largest toe on the human foot, which plays a significant role in maintaining balance and walking.

Tibialis Anterior

A muscle in the lower leg that dorsiflexes and inverts the foot, playing an important role in walking and balance.