The Event Horizon of a Black Hole Is the Point

question 15

Multiple Choice

The event horizon of a black hole is the point where _____.

• A) the mass of the black hole is concentrated in a singularity
• B) the accretion disk around the black hole contacts its surface
• C) the escape velocity equals the speed of light
• D) tidal forces ionize infalling gas
• E) an infalling particle reaches equilibrium with radiation pressure

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Definitions:

Disproportionate

Significantly uneven or out of balance in comparison to something else.

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A tax imposed on specific goods, services, or transactions, often aimed at reducing their consumption or generating revenue.

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Companies that release pollutants into the environment as a byproduct of their activities, often subject to regulation and mitigation measures.

Excise Tax

A tax levied on specific goods or services, such as tobacco, alcohol, or gasoline, at the point of manufacture or distribution.