The lifetime of a ?+ meson normally is 18 nanoseconds. In a large particle accelerator, scientists can create ?+ mesons moving at speeds very close to the speed of light
What do the scientists observe when they measure the lifetime of a ?+ meson that is created at very high speed? A) The ?+ meson lasts 18 nanoseconds.
B) The ?+ meson lasts much more than 18 nanoseconds.
C) The ?+ meson lasts much less than 18 nanoseconds.
D) The ?+ meson no longer decays and remains as a stable particle.
B
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