Multiple Choice
At what speed would an astronaut need to travel so that he would age 4.20 years while traveling a distance of 4.20 ly as measured by a stationary observer?
A) 1.00 c
B) This cannot be done.
C) 1.00 c/2
D) .707 c
E) .750 c
Correct Answer:
Verified
Correct Answer:
Verified
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