Stars: What Is the Parallax Angle for Proxima Centauri, Which

question 34

Multiple Choice

Stars: What is the parallax angle for Proxima Centauri, which is Earth's nearest star at 4.3 ly? Earth's orbit around the sun has a mean radius of 1.5 × 10⁸ km, and 1 ly = 9.461 × 10¹⁵ m.

• A) 1.2 × 10^-14 degree
• B) 2.1 × 10^-4 degree
• C) 1.2 × 10^-7 degree
• D) 2.1 × 10^-7 degree
• E) 2.1 × 10^-14 degree

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Definitions:

Higher-Order Needs

These are advanced human needs as outlined in Maslow's hierarchy, including esteem and self-actualization needs, which are fulfilled after basic physical and security needs.

Negative Instrumentality

The perception that effort will not lead to the desired performance or reward outcomes.

Expectancy Theory

A hypothesis in motivational theory stating that the strength of an individual's motivation to perform a particular action is determined by their expectation that the action will lead to a specific outcome and the value they place on that outcome.

Required Task

The responsibilities and duties assigned to an employee as part of their job role.