When a Variable Star Periodically Changes Its Luminosity, Many of Its

question 24

Multiple Choice

When a variable star periodically changes its luminosity, many of its properties also change. Which of these does NOT change?

• A) temperature
• B) radial surface speed
• C) size
• D) rotation rate

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Economic policies designed to restrict international trade to protect domestic industries from foreign competition.

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The extra quantity of a good that producers are willing to supply over what is demanded by domestic consumers, often measured when analyzing the impact of international trade.

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