What Is the Parallax Angle for Proxima Centauri, Which Is

question 2

Multiple Choice

What is the parallax angle for Proxima Centauri, which is Earth's nearest star at 4.3 ly?

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

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Definitions:

Opportunity Costs

The expense incurred from not selecting the next most favorable choice when a decision is taken or preferring one alternative over another.

Efficient

The characteristic of a resource allocation that maximizes the total surplus received by all members of society.

Production Possibilities Frontier

A curve depicting all maximum output possibilities for two or more goods given a set of inputs (resources, technology, etc.), assuming efficient use of resources.

Technological Advance

The introduction and application of new technologies and methods that improve productivity and efficiency.