HW Q.5 15. A cosmic ray proton has total energy 1024 eV as observed from Earth.9a) What are the values of y and ß for the proton?tb) Assume the galaxy is 100,000 light years in diameter. How long does it take for the protonto travel across the galaxy, in the galaxy rest frame?c) How long does it take to travel across the galaxy in the rest frame of the proton?d) What is the width of the galaxy in the rest frame of the proton?

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Answered: vere 5. A cosmic ray proton has total…

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