A Spectral Line of a Certain Star Is Observed to Be

question 62

Multiple Choice

A spectral line of a certain star is observed to be "red shifted" from a wavelength of 500 nm to a wavelength of 1500 nm.Interpreting this as a Doppler effect, the speed of recession of this star is:

• A)0.33c
• B)0.50c
• C)0.71c
• D)0.80c
• E)c

Understand the implications of global population changes on society and the environment.

Collect and analyze demographic data to inform public policy and planning.

Understand the relationship between population dynamics and urbanization, including the effects of suburbanization and urban sprawl.

Recognize the social and psychological implications of living in urban versus rural settings.

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Definitions:

Beta

A measure of a stock's volatility in relation to the overall market; a beta greater than 1 indicates higher volatility, and less than 1 indicates lower volatility.

Standard Deviation

A measure of the dispersion or variation in a distribution or set of data, indicating how much individual values differ from the mean.

Coefficient of Variation

A statistical measure of the dispersion of data points in a data series around the mean, expressed as a percentage.

Expected Returns

The anticipated amount of profit or loss an investment is projected to generate.