The Ptolemaic and Copernican Models Differed in All of the Following

question 23

Multiple Choice

The Ptolemaic and Copernican models differed in all of the following respects EXCEPT the:

• A) the appearance of epicycles.
• B) their explanation for retrograde motion.
• C) the central object in the planetary system.
• D) the rotation of Earth.

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Definitions:

Marginal Cost

The cost incurred by producing one additional unit of a good or service.

Output

The total amount of goods and services produced by an economic system.

Most Efficiently

Operating in a way that maximizes productivity or benefits while minimizing waste and costs.

Output

The total amount of goods and services produced by an economy, business, or machine in a given period.