1. Lorentz contraction (1 pt) According to Norse mythology, Odin has the Gungnir spear that is...
1. Lorentz contraction (1 pt) According to Norse mythology, Odin has the Gungnir spear that is long and powerful. To beat Fenrir (with thickness of 3 m), he threw this spear with velocity 0.96c with respect to an inertial observer Olga (O). She observes that the length of the spear is 1.4 m, which looks too short for Odin to defeat Fenrir. What is the proper length of this Gungnir spear?