The Roche Limit Around a Planet Is Defined as the

question 109

Multiple Choice

The Roche limit around a planet is defined as the

• A) distance beyond which the orbital velocity of a body in a Keplerian orbit is greater than the escape velocity and matter is no longer captured by the planet.
• B) distance inside which a solid satellite (e.g. ,a fragment of rock)will be pulled apart by tidal forces.
• C) outer extent of the magnetic field of the planet,or the magnetospheric boundary.
• D) distance inside which relative tidal forces will overcome the mutual gravitational forces of a group of particles.

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