Physics, 16.06.2020 15:57 lizzyhearts
An unstable particle is created in the upper atmosphere from a cosmic ray and travels straight down toward the surface of the earth with a speed of 0.99537 c relative to the earth. A scientist at rest on the earth's surface measures that the particle is created at an altitude of 40.0 km . As measured by the scientist, how much time does it take the particle to travel the 40.0 km to the surface of the earth?
Answers: 3
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An unstable particle is created in the upper atmosphere from a cosmic ray and travels straight down...
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