1. This problem is about ¹ mesons which have a lifetime of 2.6×10-8[sec]. 1a. At what speed must amesons created by cosmic rays at the top of the earth's atmosphere (100 km up) travel in order to make it down to the earth's surface intact? Express speed in terms of either coordinate or proper velocity relative to earth. 1b. If the rest mass of a n meson is 139.57 MeV/c^2, what kinetic energy must it have in order to make it to ground?
1. This problem is about ¹ mesons which have a lifetime of 2.6×10-8[sec]. 1a. At what speed must amesons created by cosmic rays at the top of the earth's atmosphere (100 km up) travel in order to make it down to the earth's surface intact? Express speed in terms of either coordinate or proper velocity relative to earth. 1b. If the rest mass of a n meson is 139.57 MeV/c^2, what kinetic energy must it have in order to make it to ground?
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![1. This problem is about ¹ mesons which have a lifetime of 2.6×10-8[sec].
1a. At what speed must mesons created by cosmic rays at the top of the earth's atmosphere
(100 km up) travel in order to make it down to the earth's surface intact? Express speed in terms
of either coordinate or proper velocity relative to earth.
1b. If the rest mass of a meson is 139.57 MeV/c^2, what kinetic energy must it have in order
to make it to ground?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F50e21552-be96-42f7-aa7f-90e5d8469e8c%2Faba1c78e-ce1b-4c42-94e6-5bb0f90292e4%2F60t33k_processed.png&w=3840&q=75)
Transcribed Image Text:1. This problem is about ¹ mesons which have a lifetime of 2.6×10-8[sec].
1a. At what speed must mesons created by cosmic rays at the top of the earth's atmosphere
(100 km up) travel in order to make it down to the earth's surface intact? Express speed in terms
of either coordinate or proper velocity relative to earth.
1b. If the rest mass of a meson is 139.57 MeV/c^2, what kinetic energy must it have in order
to make it to ground?
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