Are you in orbit around anything?

A) No, because you are at rest relative to space.
B) No, because you are at rest relative to Earth's surface.
C) Yes, you are in orbit around the sun.
D) Yes, you are in orbit both around the sun and around Earth's center.
E) Yes, you are in orbit around Earth's center.


C

Physics & Space Science

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In relativity, two people share the same reference frame only if they

A) are not moving relative to one another. B) are both located in the same place. C) are both located in the same place and are stationary. D) agree on the laws of nature.

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Analyze these generalizations about the eight planets in our solar system. Determine if they most likely apply to planets closer or farther away from the sun.

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Three spaceships A, B, and C are in motion, as shown in the figure. The commander on ship B observes ship C approaching with a relative velocity of 0.78c

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