Pi Mesons at Rest Have a Half-Life of T $\beta$ C, the Distance in Which the Intensity of the Beam

question 38

Multiple Choice

Pi mesons at rest have a half-life of T.If a beam of pi mesons is traveling at a speed of v = $\beta$ c, the distance in which the intensity of the beam is halved is:

• A)"c \(\beta\) T(1 - \(\beta\) ²)^-1/2"
• B)"c \(\beta\) T[(1 + \(\beta\) )/(1 - \(\beta\) )]^1/2"
• C)" \(\beta\) vT"
• D)"(1 - \(\beta\) ²)^1/2vT"
• E)"none of the above"

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