What Is One of the Differences Between Cepheids and RR

question 37

Multiple Choice

What is one of the differences between Cepheids and RR Lyrae variables?

• A) Cepheids are giants, but RR Lyrae stars are still on the main sequence.
• B) The pulsations of RR Lyrae stars are much less regular than those of Cepheids.
• C) The RR Lyrae stars have much shorter periods than Cepheids.
• D) The period- luminosity relation holds only for RR Lyrae stars.
• E) All Cepheids have the same brightness, but RR Lyrae stars vary greatly in luminosity.

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Definitions:

Common Shares

Equity ownership units in a corporation that entitle holders to voting rights and potential dividends.

Return On Equity Ratio

A measure of financial performance calculated by dividing net income by shareholders' equity, indicating how well a company uses investments to generate earnings growth.

Financial Statements

Official records that outline the financial activities and condition of a business, individual, or other entity, typically including the balance sheet, income statement, and cash flow statement.

Common Shares

Common shares represent ownership in a company and provide shareholders with voting rights and dividends, subject to corporate profitability and decision of the board.