If the Black Hole in the Center of the Galaxy

question 87

Multiple Choice

If the black hole in the center of the Galaxy is 4 * 10⁶ solar masses, what would be its radius (that is, the radius of its event horizon) ?

• A) 1.2 * 10⁷ m (about twice the radius of Earth)
• B) 1.2 * 10⁹ m (about twice the radius of the Sun)
• C) 1.2 * 10¹⁰ m (about one-fifth of Mercury's orbital radius)
• D) 1.2 * 10¹² m (almost twice Jupiter's orbital radius)

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Definitions:

Economic Failure

The inability of a market or economy to allocate resources efficiently, often leading to wastefulness or loss.

Creditors

Individuals or institutions that extend credit by lending money or providing goods or services that will be paid for later.

Leveraged Buyout

A transaction where a company is acquired primarily using borrowed funds.

Publicly Traded Company

A company that is registered with the SEC and whose securities therefore may be sold to the general public.