Physics, 18.08.2019 03:20 avadestinyy
Galaxy a is moving away from us with a speed of 0.85c relative to the earth. galaxy b is moving away from us in the opposite direction with a relative speed of 0.55c. assume that the earth and the galaxies are inertial reference frames. how fast is galaxy a moving according to an observer in galaxy b?
Answers: 2
Physics, 22.06.2019 14:00, ogneshelle
The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?
Answers: 2
Galaxy a is moving away from us with a speed of 0.85c relative to the earth. galaxy b is moving away...
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