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Contrast the center of gravity (CG) and center of mass (CM) of the moon. (Suppose the moon is spherical and centered means the center point of the sphere)
A) The CG is centered and CM is further from earth.
B) The CM and CG are both centered in the moon.
C) The CM is centered and CG is further from earth.
D) The CG is centered and CM is closer to earth.
E) The CM is centered and CG is closer to earth.
Why do magnetic field lines contract longitudinally and exert a lateral pressure?
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