The Mean Lifetime of Muons Is 2

question 26

Multiple Choice

The mean lifetime of muons is 2.2 μs. How fast are they moving if their measured mean lifetime is 1.1 μs?

• A) 0.50 c
• B) 0.87 c
• C) 0.56 c
• D) 0.94 c
• E) This cannot happen.

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