1. The problem statement, all variables and given/known data Two events occur in an inertial system K as follows: Event 1: x1 = a, t1 = 2a/c, y1 = 0, z1 = 0 Event 2: x2 = 2a, t2 = 3a/(2c), y2 = 0, z2 = 0 Is there a frame K' in which the two events described occur at the same place? Explain. 2. Relevant equations Lorentz transformation: x' = (x-vt)/(sqrt(1-(v/c)^2) 3. The attempt at a solution I set both equations up as x' (equal to each other), plugged in the values on each side for x1 and x2, and it resulted in me losing 'a' on both sides (cancels out). I'm assuming that this means there is no frame K' where they would occur in the same place, but I am a bit surprised at that answer and am not sure how to explain it. Can someone explain why I am losing 'a' on both sides of the equation and what that means when it occurs?