The Mass of a Star Is 4

question 18

Multiple Choice

The mass of a star is 4.05 * 10³¹ kg and it performs one rotation in 15.00 days.Find its new period (in days) if the diameter suddenly shrinks to 0.450 times its original size.Assume a uniform spherical mass before the collapse and a uniform spherical mass distribution after the collapse.

• A)1.8965
• B)2.2189
• C)2.5962
• D)3.0375
• E)3.5539

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Definitions:

Uncertainty

The state of having limited knowledge where it is impossible to exactly describe existing states, future outcomes, or the likelihood of events.

Growth Mindset

A belief or approach that abilities and intelligence can be developed with effort, learning, and persistence.

Fixed Mindset

A belief that one's abilities, intelligence, and talents are fixed traits and cannot be significantly developed.

Angela Lee Duckworth

A psychologist known for her research on grit and perseverance, suggesting that passion and resilience are key factors in personal and professional success beyond IQ and talent.