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

---

Definitions:

Cross-Sectional Study

A cross-sectional study is a type of observational research that analyzes data from a population, or a representative subset, at one specific point in time.

Longitudinal Study

A research design that involves repeated observations of the same variables over a period of time, often years or decades.

Drawbacks

The disadvantages or negative aspects of a situation, plan, or decision.

Life Events

Significant occurrences or changes in an individual's life that can influence their emotional and physical well-being.