In Which of These Cases Does Gravity, a Long-Range Force

question 151

Multiple Choice

In which of these cases does gravity, a long-range force, NOT result in a bound system?

• A) orbital movements of globular clusters about the center of the Milky Way
• B) disruption by tidal forces from the Milky Way of the most recently discovered member of the Local Group, Canis Major Dwarf, a close companion of the Milky Way Galaxy
• C) motions of galaxies within clusters
• D) motions of clusters within superclusters

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