Multiple Choice
An astronaut at rest has a heart rate of 65 beats/min.What will her heart rate be as measured by an earth observer when the astronaut's spaceship goes by the earth at a speed of 0.80c?
A) 108 beats/min
B) 39 beats/min
C) 81 beats/min
D) 52 beats/min
Correct Answer:
Verified
Correct Answer:
Verified
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