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A particle known as a pion lives for a short time before breaking apart into other particles. Suppose it is moving at a speed of 0.974c, and an observer who is stationary in a laboratory measures the particle's lifetime to be 4.50 multiply.gif 10-8 s.
(a) What is the lifetime according to a hypothetical person who is riding along with the pion?
(b) According to this hypothetical person, how far does the laboratory move before the pion breaks apart?
An electron moves with speed 700 m/s. Entered uniform E and B field on straight path. E points down and into page. E B and v are perpendicular
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