Cygnus X-1 and LMC X-3 Are Black Holes If the Masses

question 19

Multiple Choice

Cygnus X-1 and LMC X-3 are black holes if the masses of the unseen companions are

• A) less than 5 solar masses.
• B) more than 5 solar masses.
• C) between 0.4 and 1.4 solar masses.
• D) less than 0.4 solar masses.
• E) not larger than the masses of the stars that we can see.

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Definitions:

Three-Phase Motors

Electric motors designed to operate on a three-phase alternating current supply, offering high efficiency and a smooth power delivery for industrial applications.

Degrees Out

A phrase indicating that something is misaligned or out of its proper orientation by a certain angle.

Magnetic Fields

Invisible fields produced by electric currents or magnetic materials, which exert forces on moving charges or other magnetic materials within the field.

Electro-Magnets

Magnets created by passing an electric current through a coil of wire surrounding a metal core.