Two spaceships s1 and s2 are approaching earth from opposite directions with v1=0.8c and v2= -0.6c both relative to earth. s1 is 8 light-minutes to the left of earth and s2 is 6 light-minutes to the right of earth.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

For which pair of objects would adding the same a

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?