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trixr4kids trixr4kids
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3 months ago

A pion has a mean lifetime of 25 ns in its own rest frame. A beam of pions traveling through the laboratory at a speed of 0.60 c is measured to have a mean lifetime of



21 µs.



20 ns.



31 ns.



31 µs.

Textbook 
College Physics

College Physics


Edition: 5th
Author:
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Chintan13Chintan13
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3 months ago
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