In order to appear motionless to an observer at a fixed location on earth's surface, the satellite must rotate around earth at the same and both the location and satellite must be in. this can only occur above earth's equator. above any other location, the "ring" of satellite motion and the "ring" of motion of the location on earth's surface be in the same plane. true / false.

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.