A pion is an unstable particle that has an average lifetime of 2.55 x 10$ s. This is the time interval between its creation in a nuclear process and its extinction into decay products, as measured in a frame of reference at rest with respect to the pion. An "average" pion is traveling at 0,230c relative to Earth. How far does it travel in its lifetime, relative to Earth? A) 2.07 m B) 1.81 m C) 2.23 m D) 3.22 m E) 3.50 m

A pion is an unstable particle that has an average lifetime of 2.55 x 10$ s. This is the time interval between its creation in a nuclear process and its extinction into decay products, as measured in a frame of reference at rest with respect to the pion. An "average" pion is traveling at 0,230c relative to Earth. How far does it travel in its lifetime, relative to Earth? A) 2.07 m B) 1.81 m C) 2.23 m D) 3.22 m E) 3.50 m

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter1: Relativity I

Section: Chapter Questions

Problem 10P: The average lifetime of a pi meson in its own frame of reference is 2.6 × 10−8 s. If the meson moves...

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The average lifetime of a pi meson in its own frame of reference is 2.6 × 10−8 s. If the meson moves with a speed of 0.95c, what is (a) its mean lifetime as measured by an observer on Earth and (b) the average distance it travels before decaying, as measured by an observer on Earth?
(a) Beta decay is nuclear decay in which an electron is emitted. If the electron is given 0.750 MeV of kinetic energy, what is its velocity? (b) Comment on how the high velocity is consistent with the kinetic energy as it compares to the rest mass energy of the electron.
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