What is exceptional about the rotation of Hyperion? Give a possible explanation
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It is the only moon with one hemisphere not tidally fixed toward its planet; the rotation of Hyperion is called "chaotic," as it turns toward whichever other moon it is passing at the time. It is probably a recent "capture," and has not had time to "settle down" into synchronous rotation yet.
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A brass rod of length L 5 0.75 m is twisted by torques T until the angle of rotation between the ends of the rod is 3.58. The allowable shear strain in the copper is 0.0005 rad. The maximum permissible diameter of the rod is approximately:
(A) 6.5 mm
(B) 8.6 mm
(C) 9.7 mm
(D) 12.3 mm
What is a planet's Roche limit?
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The measurement of space in any direction is called ______________
Fill in the blank(s) with correct word
Compared to life on Europa, if life exists on Ganymede it will probably be
A) less abundant and less evolved B) more abundant and more evolved C) less abundant but more evolved D) more abundant but less evolved