A Galaxy 200 Mpc from Us Has a Recessional Velocity

question 28

Multiple Choice

A galaxy 200 Mpc from us has a recessional velocity of about 14,000 km/s.If it emits radiation at a wavelength of 121 nm, how much is that wavelength shifted when we observe it?

• A)5.7 x 10^-12 m
• B)5.7 x 10^-10 m
• C)5.7 x 10^-9 m
• D)5.7 x 10^-7 m
• E)5.7 x 10^-6 m

---

Definitions:

Dominant Strategy

A strategy in game theory that yields the best outcome for a player, regardless of the opponent's actions.

Sherman Antitrust Act

The Sherman Antitrust Act is a landmark U.S. law passed in 1890 aimed at preventing anticompetitive practices and promoting fair competition.

Antitrust Policy

Legislation enacted by federal or state government to prevent new monopolies from forming and to break up those that already exist in order to promote competition and ensure fair practices in the marketplace.

Monopolies

A market structure characterized by a single seller who has exclusive control over a product or service, with no close substitutes.