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11.
A tau particle has a rest mass of 3.18×10-2"kg. Suppose a tau particle is traveling
at 1.25 x10° in the lab's inertial frame.
S
a. What is 7, in the lab's frame?
b. What is the magnitude of the momentum of the tau particle in the lab's frame?
c. What is the rest energy of the tau particle?
d. What is the kinetic energy of the tau particle in the lab's frame?
e. What is the total energy of the particle?

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