Which two things are the same for all observers according to the theory of relativity?

A) (1) the laws of nature and (2) the speed of light
B) (1) the laws of nature and (2) the rate at which time proceeds
C) (1) the speed of light and (2) the simultaneity of events
D) (1) the rate at which time proceeds and (2) the simultaneity of events
E) (1) the size of moving objects and (2) the mass of moving objects


A) (1) the laws of nature and (2) the speed of light

Physics & Space Science

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Fill in the blank(s) with the appropriate word(s).

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