Certain Stars at the End of Their Lives Are Thought

question 27

Multiple Choice

Certain stars at the end of their lives are thought to collapse combining their protons and electrons together to form a neutron star.Such a star could be thought of as a giant atomic nucleus.If a star of mass equal to that of the sun (M = 1.99 × 10³⁰ kg) collapsed into neutrons (m_n = 1.67 × 10−²⁷ kg) ,what would be the radius of such a star? (Hint: r = r₀A^1/3,where r₀ = 1.20 × 10−¹⁵ m) .

• A) 25.4 km
• B) 18.7 km
• C) 12.7 km
• D) 6.40 km

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Definitions:

Cerebrum

The largest part of the brain. It is divided into two hemispheres with four lobes in each hemisphere.

Midbrain

That portion of the brain connecting the pons and the cerebellum.

Thalamus

A portion of the brain lying between the cerebrum and the midbrain.

Spinal Nerves

Bundles of motor and sensory nerves that connect the central nervous system to the rest of the body, enabling movement and sensation.