Physics, 08.03.2021 20:00 adrianna74

A beam of unstable K mesons, traveling at a speed of 32c, passes through two counters 9.00 m apart. The particles suffer a negligible loss of speed and energy in passing through the counters but give electrical pulses that can be counted. It is observed that 1000 counts are recorded in the first counter and 250 in the second. Assuming that this whole decrease is due to the decay of the particles in flight, what is their half-life as measured in their own rest system?

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A beam of unstable K mesons, traveling at a speed of 32c, passes through two counters 9.00 m apart....

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