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(a) Can a person, in principle, travel from Earth to the galactic center (which is about 23000 ly distant) in a normal lifetime? Explain using both time-dilation and length- contraction arguments. (b) What constant speed would be needed to make the trip in 30 t (proper time)?

(a) Can a person, in principle, travel from Earth to the galactic center (which is about 23000 ly distant) in a normal lifetime? Explain using both time-dilation and length- contraction arguments. (b) What constant speed would be needed to make the trip in 30 t (proper time)?

Grade:upto college level

1 Answers

Deepak Patra
askIITians Faculty 471 Points
8 years ago
(a) Yes, the person, in principle, can travel from Earth to galactic center in a normal life time.
(b) To find out the constant speed u that would be needed to make the trip in 30 y (proper time), first we have to find out the Lorentz factor γ.
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