Just solve the part 3 just part 3 Transcribed Image Text: 3

Just solve the part 3 just part 3 Transcribed Image Text: 3. (i) The most energetic proton ever entered to earth from cosmic has K.E of 3 × 1020 eV.
What Lorentz factor and speed that proton has?
(ii) A particle of mass 2.5 MeV/c² and kinetic energy 3.6 MeV collides with a stationary
particle of mass 4 MeV/c². After the collision, the two particles stick together. Find (a) the
initial momentum of the system, (b) the final velocity of the two-particle system, and (c) the
mass of the two-particle system
(iii) A proton having mass 938 MeV/c² has a total energy of 1400 MeV. Find (a) The speed
u of the proton (b) Yp
(c) The momentum of the proton

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