You Record the Spectrum of a Star and Find That

question 52

Multiple Choice

You record the spectrum of a star and find that the calcium absorption line,whose rest wavelength is 393.3 nm,has an observed wavelength of 394.0 nm.What is the radial velocity of this star?

• A) 500 km/s
• B) 50 km/s
• C) 5 km/s
• D) 0.5 km/s

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Definitions:

Judgments

The cognitive processes of forming opinions or conclusions based on information and reasoning.

Discrimination

Discriminatory behavior towards individuals based on their race, age, or sex, manifesting as prejudice and unfairness.

Prejudice

A preconceived opinion or judgment formed without adequate grounds or before sufficient knowledge.

Behavior

The actions or reactions of an individual, usually in relation to the environment, which can be observed and measured externally.