Why Is the Cosmic Microwave Background (CMB)so Cold If the Early

question 39

Multiple Choice

Why is the cosmic microwave background (CMB) so cold if the early universe was so hot?

• A) Enough time has passed for matter to release enough heat to cool down.
• B) The CMB constantly interacts with atoms,which effectively cool down the photons.
• C) The expansion of the universe has redshifted those photons to an effectively cooler temperature.
• D) Misleading; The Big Bang was initially hot but the CMB was released from cold material much later on.

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Definitions:

Unit Product Cost

The total cost associated with producing one unit of a product, including direct materials, direct labor, and overhead costs.

Year 2

Typically refers to the second year of a specific timeframe, such as a company's fiscal year or a multi-year study.

Variable Costing

A costing method that includes only variable production costs (direct materials, direct labor, and variable manufacturing overhead) in the cost of a product.

Unit Product Cost

The total cost (both direct and indirect) allocated to a single unit of product, used in setting prices and assessing profitability.