6. Moons created in collisions between cosmic rays and atoms high in our atmosphere are unstable and disinte- grate into other particles. At rest these particles have an average lifetime of only 2.2 X 19" s. (a) What is the average lifetime in the laboratory inertial frame of muons travelling at 9.990 in that frame? (b) if muons did not experience a relativistic increaae in lifetime. then through what average distance could they travel in the laboratory inertial frame before disin- tegrating. if travetling at 9.990 in that frame? (c) Through what average distance do muons travel in the laboratory frame. if moving through that frame at 0.990