Three galaxies are aligned along an axis in the orderA, B, C. An observer in galaxy B is
Chapter 2, Problem 35(choose chapter or problem)
Three galaxies are aligned along an axis in the orderA, B, C. An observer in galaxy B is in the middle andobserves that galaxies A and C are moving in oppositedirections away from him, both with speeds 0.60c.What is the speed of galaxies B and C as observed bysomeone in galaxy A?
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