Suppose You Want to Know the Chemical Composition of a Distant

question 118

Multiple Choice

Suppose you want to know the chemical composition of a distant star. Which piece of information is most useful to you?

• A) The wavelengths of spectral lines in the star's spectrum
• B) The peak energy of the star's thermal radiation
• C) The Doppler shift of the star's spectrum
• D) Whether the star's spectrum has more emission lines or more absorption lines

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Definitions:

Purchasing Power

The value of a currency expressed in terms of the amount of goods or services that one unit of money can buy.

Heckscher-Ohlin Theory

An economic theory stating that countries will export products that utilize their abundant and cheap factor(s) of production and import products that require resources that are rare or expensive domestically.

Factor Endowments

The quantities of various resources a country possesses, which can affect its comparative advantage in international trade.

Free-Trade Theories

Economic theories advocating for the elimination of barriers to the exchange of goods and services between nations, to encourage trade and economic growth.