If RR Lyrae Stars in a Globular Cluster Had an Apparent

question 15

Multiple Choice

If RR Lyrae stars in a globular cluster had an apparent magnitude of 11.5 and an absolute magnitude of 0.5, what would the globular cluster's distance be?

• A) 1,600 pc
• B) 1,900 pc
• C) 2,500 pc
• D) 3,200 pc
• E) 8,600 pc

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Definitions:

Break-Even Point

The production level at which total revenues equal total expenses, resulting in neither a profit nor a loss.

AVC

Average Variable Cost, the total variable cost divided by the quantity of output produced, representing the variable cost of producing each unit.

Shutdown Point

The level of operation at which a company does not generate enough revenue to cover its variable costs, leading to a decision to cease operations temporarily.

Short-Run Supply Curve

A graphical representation that shows the relationship between the price of a good or service and the quantity that producers are willing to supply in the short term, typically illustrating an upward slope.