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

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Definitions:

WAN

Short for Wide Area Network, a telecommunications network that extends over a large geographical area for the purpose of computer networking.

LAN

Short for Local Area Network, a network that connects computers within a limited area such as a home, school, or office building, facilitating communication and resource sharing.

HAN

Home Area Network, a network that connects digital devices within a home, allowing them to communicate with each other and with internet services.

VPN Throughput

The volume of data transiting through a VPN connection in a given period of time.