A Space Station Out Beyond the Solar System Is Rotating

question 27

Multiple Choice

A space station out beyond the solar system is rotating with constant angular velocity. A spaceship heading into the station along a diameter of the station, uses its rockets to brake, and then docks inside the station at its center. When the spaceship docks, the angular momentum of the system consisting of the station and ship

• A) is less than the original angular momentum of the station.
• B) is the same as the original angular momentum of the station.
• C) is greater than the original angular momentum of the station.
• D) is less than the original angular momentum of the station, but the angular velocity increases.
• E) is greater than the original angular momentum of the station, but the angular velocity decreases.

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Definitions:

Return On Assets

A financial ratio that indicates the percentage of profit a company earns in relation to its overall resources. It demonstrates how effectively a company is using its assets to generate earnings.

Average Collection Period

A measure of the average number of days it takes a company to collect payments from its credit sales.

Du Pont Analysis

A method of performance measurement that breaks down return on equity into three component parts: profit margin, asset turnover, and financial leverage.

Pearson's Product-moment

A correlation coefficient that measures the linear correlation between two variables X and Y, giving a value between +1 and -1.