Why Is Newton's Version of Kepler's Third Law So Useful

question 46

Multiple Choice

Why is Newton's version of Kepler's third law so useful to astronomers?

• A) It can be used to determine the masses of many distant objects.
• B) It allows us to calculate distances to distant objects.
• C) It tells us that more-distant planets orbit the Sun more slowly.
• D) It explains why objects spin faster when they shrink in size.

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Definitions:

Prices

The amount of money expected, required, or given in exchange for goods or services.

Marginal Rate

The rate of change in cost or benefit resulting from a particular increase in volume or activity.

Consumption

The use of goods and services by households, which is a primary component in calculating a country's gross domestic product (GDP).

Marginal Utilities

The additional satisfaction or utility gained from consuming one more unit of a good or service.