Light from Some Stars Shows an Apparent Change in Frequency

question 36

Multiple Choice

Light from some stars shows an apparent change in frequency because of:

• A)interference
• B)refraction by layers of air
• C)diffraction
• D)reflection
• E)relative motion

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Definitions:

Average Variable Cost (AVC)

The total variable costs of production divided by the quantity of output produced, representing the variable cost per unit of output.

Average Total Cost

The total cost of production divided by the quantity of output produced, representing the average cost per unit of good or service.

Average Fixed Cost

The fixed costs of production (costs that do not change with output) divided by the quantity of output produced, which decreases as production increases.

Total Costs

The aggregate financial expense incurred in the production of goods or services, including both fixed and variable costs.