An astronaut at rest on earth has a heartbeat rate of 75
An astronaut at rest on Earth has a heartbeat rate of 75 beats/min. When the astronaut is traveling in a spaceship at 0.89c, what will this rate be as measured by the following:
a) an observer also in the ship
b) an observer at rest on Earth
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if astronauts could travel at v 0970c we on earth would say it takes 420 0970 433 years to reach alpha centauri 420
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at what speed does a clock move by respect to an observer that measures it to run at one-sixth the rate of an identical
if astronauts could travel at v 0980c we on earth would say it takes 420 0980 429years to reach alpha centauri 420
an astronaut at rest on earth has a heartbeat rate of 75 beatsmin when the astronaut is traveling in a spaceship at
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