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Physics, 08.07.2020 17:01 23rwilliamson
Mission Control sends a brief wake-up call to astronauts in a distant spaceship. Five seconds after the call is sent, Mission Control hears the waking groans of the astronauts. How far away (at most) from Earth is the spaceship
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Mission Control sends a brief wake-up call to astronauts in a distant spaceship. Five seconds after...
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