A star is 21.6 light-years from Earth. How long would it take a spacecraft traveling 0.950c to
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(a) On Earth,
(b) On the spacecraft?
(c) What is the distance traveled according to observers on the spacecraft?
(d) What will the spacecraft occupants compute their speed to be from the results of (b) and (c)?
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a To an observer on Earth 216 lightyear is the rest length so the time will be ...View the full answer
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