If the Redshifts of Quasars Arise from the Expansion of the Universe,yet

question 31

Multiple Choice

If the redshifts of quasars arise from the expansion of the universe,yet they have brighter magnitudes than galaxies with the same redshifts,what must be generally true of quasars?

• A)They are very small.
• B)They are within the Local Group.
• C)They are moving toward Earth with a large radial velocity.
• D)They emit a very large amount of energy per second.

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Definitions:

Lagrangian Technique

A mathematical method used in economics and engineering to find the maximum or minimum values of a function subject to constraints.

Optimal Capital/Labor Ratio

The most efficient mix of capital and labor that maximizes output or minimizes cost for producing a given level of output.

Production Function

An equation that describes the maximum output of a firm, given the quantity of inputs.

Variable Cost Function

A mathematical representation of the costs that vary with the level of output or activity, unlike fixed costs.