8. Centripetal Forces & Gravitation

Carbon fusion occurs in high-mass stars but not in low-mass stars because _______.

Which observation provides the strongest evidence that the star system Cygnus X-1 contains a black hole?

If the $\mathrm{Sun}$ were to suddenly become a black hole without changing its $\mathrm{mass}$, what would happen to $\mathrm{Earth}$'s orbit around the $\mathrm{Sun}$?

A student believes that a black hole is shaped like a funnel or a hole in space. Which statement best corrects this misconception and accurately describes the actual shape of a black hole?

Which of the following can actually escape from inside a black hole's event horizon?

Degeneracy pressure stops the crush of gravity in all the following objects except which one?

Why is a star considered a good $\mathrm{blackbody}$ radiator?

Which of the following best describes a black hole?

What is the approximate radius of the event horizon (Schwarzschild radius) for a black hole with mass $10M_{\mathrm{sun}}$?

Which of the following statements about black holes is not true?

Which of the following systems is most likely to contain a black hole?

According to current scientific understanding, what is believed to have existed immediately before the $\mathrm{Big Bang}$?

Which type of star is characterized by both a low $T$ (temperature) and a low $L$ (luminosity)?

What is the $\mathrm{event} \mathrm{horizon}$ of a $\mathrm{black} \mathrm{hole}$?

What is the best evidence for the existence of an extremely massive black hole at the center of the Milky Way?