In One Orbit Around the Sun,Mercury Rotates Around Its Axis

question 511

Multiple Choice

In one orbit around the Sun,Mercury rotates around its axis (see Figure 6-34 and Figure 6-44,Comins,Discovering the Essential Universe,6th ed.) :

• A) twice.
• B) 3 times.
• C) 1 time.
• D) once, in a synchronous orbit.

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