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8. | A particle with a lifetime of 2 X 10-6 s moves through the laboratory with a speed of 0.9 c. It’s lifetime, as measured by an observer in the laboratory, is? | |
A. | 2 X 10-6 s | |
B. | 3.2 X 10-6 s | |
C. | 4.6 X 10-6 s | |
D. | 5.4 X 10-6 s | |
Answer: Option C | |
Explanation: | |
Δt0 = 2 X 10-6 s, v = 0.9c, Δt =? |
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