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If You Measure a Spiral Galaxy's Rotation Curve and Apparent

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Short Answer

If you measure a spiral galaxy's rotation curve and apparent brightness you can estimate its distance using the ______ ______ _______.


Definitions:

Ergonomics

An interdisciplinary approach to designing equipment and systems that can be easily and efficiently used by human beings.

Psychological Aggression

Hostile social interaction or behavior that involves mental or emotional harm rather than physical.

Work Performance

The assessment of an employee's effectiveness in fulfilling job responsibilities and tasks.

Drug Testing

The process of using medical or technical methods to determine whether a person has used the drug substances.

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