Light from Some Stars Shows an Apparent Change in Frequency

question 36

Multiple Choice

Light from some stars shows an apparent change in frequency because of:

• A)interference
• B)refraction by layers of air
• C)diffraction
• D)reflection
• E)relative motion

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Definitions:

Horizontal Restraint

A term used in antitrust law to describe practices that restrict competition among firms at the same level in the supply chain.

Tying Arrangement

A commercial strategy where a seller requires a buyer to purchase a secondary product as a condition of buying a desired primary product.

Sherman Act

A landmark federal statute in the scope of U.S. antitrust law passed by Congress in 1890, which prohibits monopolistic practices and promotes competition.

Per Se Violation

An act that is inherently illegal, without the need for further evidence to prove its unlawfulness.