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Thread: Special Relativety

  1. February 24th 2008, 04:50 PM #1
    Mtl
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    Special Relativety

    The typical lifetime of a person on Earth is 70yr. In the frame of reference of a galxy moving away from Earth with a speed of 0.75c, what is the lifetime of a person on Earth?
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  2. February 24th 2008, 06:35 PM #2
    Mtl
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    bump
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  3. February 24th 2008, 06:51 PM #3
    mr fantastic
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    Quote Originally Posted by Mtl View Post
    The typical lifetime of a person on Earth is 70yr. In the frame of reference of a galxy moving away from Earth with a speed of 0.75c, what is the lifetime of a person on Earth?
    From the given data, \Delta t^{'} = 2 \Delta t.
    Answer: 35 years.

    Where the 2 has come from ..... Read this.

    And please do not bump.
    Last edited by mr fantastic; February 24th 2008 at 08:01 PM. Reason: saw from some later posts that the base level of knowledge is much smaller than expected.
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