How Is the Energy That Powers Radio Galaxies, Quasars, and Other

question 125

Multiple Choice

How is the energy that powers radio galaxies, quasars, and other active galactic nuclei produced?

• A)by matter that has been converted to pure energy by interacting with the jets shot out by a central black hole
• B)by matter- antimatter annihilation near a central black hole
• C)by nuclear fusion near a central black hole
• D)by magnetic fields that trap and accelerate charged particles, which then radiate large amounts of energy
• E)by gravity, which converts the potential energy of matter falling toward a central black hole into kinetic energy, which is then converted to thermal energy by collisions among the particles of matter

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Definitions:

Flexible Budget

A budget designed to respond and adapt to changes in the level of operations or volume.

Plane Operating Costs

Expenses associated with operating an aircraft, including fuel, maintenance, crew salaries, and depreciation.

Spending Variance

The difference between the actual amount spent and the budgeted amount for a particular account or category.

Supply Costs

Expenses incurred in acquiring the goods or services needed to run a business, including raw materials, parts, and utilities.