If the Spectrum of a Distant Galaxy Is Observed to Have

question 40

Multiple Choice

If the spectrum of a distant galaxy is observed to have a calcium K absorption line that occurs at a wavelength of 500.4 nm,what is this galaxy's distance if the rest wavelength of this absorption line is 393.4 nm?

• A) 950 Mly
• B) 1,800 Mly
• C) 2,300 Mly
• D) 3,700 Mly

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Investment Requirement

The minimum amount of money needed to invest in a particular venture, fund, or project.

Financial Plan

A comprehensive evaluation of an individual's or organization's current and future financial state by using currently known variables to predict future income, asset values, and withdrawal plans.

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The practice of making predictions based on current and historical information, often using statistical models and analysis.

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The deliberate partitioning of the expenditure for a solid asset over its period of utility.