Mercury Rotates Once with Respect to the Distant Stars in 59

question 322

Multiple Choice

Mercury rotates once with respect to the distant stars in 59 days and has a sidereal period of 88 days.If a star is seen to be overhead to an observer on Mercury at midnight on a particular day,how many times will Mercury orbit the Sun before this star is again above the observer's head in a nighttime sky? (See Figure 6-44,Comins,Discovering the Essential Universe,6th ed.)

• A) 3 times
• B) twice
• C) It will never again reach this specific position.
• D) once

---

Definitions:

Blue Ocean Strategy

A marketing theory that suggests companies are better off searching for ways to gain "uncontested market space" than competing with similar companies.

Differentiation

Differentiating a product or service to enhance its appeal to a chosen market segment.

Lower Cost

The strategy or condition of achieving a reduction in expenses, leading to a competitive pricing advantage or higher profit margins.

Cost Focus

A business strategy aiming to become the lowest-cost producer in an industry for a particular segment or niche.