(adsbygoogle = window.adsbygoogle || []).push({}); Relativity question, photon and proton....

1. The problem statement, all variables and given/known data

Proton of gamma factor 10^12 and a photon set off from one side of our galaxy to the other take the distance to be 9.3x10^20m.

What is the time interval that the photon precedes the proton?

2. Relevant equations

\gamma = sqrt(c/2epsilon). (epsilon being c-v)

3. The attempt at a solution

Worked out epsilon to be 1.5x10^(-18)

Not sure where to go from there anyhelp/hints would be most appreciated.

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# Relativity question, photon and proton

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