At the Stanford Linear Accelerator Center (SLAC), subatomic particles are accelerated to high energies over a straight path whose length, in Earth’s reference frame, is 3.2 km. For an electron traveling at 0.9999995c How long does the trip take as measured

(x) in Earth’s frame and

(y) in the electrons frame?

(z) What’s the length of the linear accelerator in the electrons’ frame?

Explain each step.