A pair of observers moving relative to one another will always agree upon all but which of the following:

A. the length of a space-time interval between two events
B. their respective rest masses
C. whether two events are simultaneous
D. their relative velocity
E. the relativistic factor gamma that links their reference frames


C. whether two events are simultaneous

Physics & Space Science

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This bar graph is based on statistical study of results from the Kepler mission. Which of the following conclusions is supported by the graph?

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