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Alice and Mary are twins. Mary moves away from the Earth to a distant planet 12 light years away from the Earth. a) With what MINIMUM speed should Mary move in order to return to the Earth N=6 years younger than her sister? b) Explain the resolution of "twin paradox"? ( The twins seem to be in a symmetrical situation, why is one of them younger.)

Alice and Mary are twins. Mary moves away from the Earth to a distant planet 12 light years away from the Earth. a) With what MINIMUM speed should Mary move in order to return to the Earth N=6 years younger than her sister? b) Explain the resolution of "twin paradox"? ( The twins seem to be in a symmetrical situation, why is one of them younger.)

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Alice and Mary are twins. Mary moves away from the Earth to a distant planet 12 light years away from the Earth. a) With what MINIMUM speed should Mary move in order to return to the Earth N=6 years younger than her sister? b) Explain the resolution of "twin paradox"? ( The twins seem to be in a symmetrical situation, why is one of them younger.)
Transcribed Image Text:Alice and Mary are twins. Mary moves away from the Earth to a distant planet 12 light years away from the Earth. a) With what MINIMUM speed should Mary move in order to return to the Earth N=6 years younger than her sister? b) Explain the resolution of "twin paradox"? ( The twins seem to be in a symmetrical situation, why is one of them younger.)
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