In Stanford University's Linear Accelerator Machine, electrons are accelerated to a kinetic energy of 50 billion eV. The electron path in the accelerator is 3 km. The speed of these electrons turns out to be about 1.6 cm/s slower than speed of light.
a) What is the length of the accelerator in electron's frame of reference?
b) How long does it take to travel the accelerator in electron's frame of reference?
c) How long does it take to travel the accelerator in the laboratory frame of reference?