1. Two events occur simultaneously in an inertial reference frame, separated by a distance of 3 metres. Within a different inertial frame that is moving with respect to the first, one event occurs 10^-8 seconds later than the other. (a) In the moving frame, what is the spatial distance between the two events? (b) What is the speed of the second frame relative to the first? 2./3. I'm lost here. I've tried solving for delta(x) in: delta(t)' = gamma * ( delta(t) - v/c^2 * delta(x) ) but I'm stumped. We've just begun doing relativity work in my class, but my professor doesn't do examples during lecture, making the work quite challenging to do on my own. We've been shown a few of the entry-level relativity equations (time dilation, invariant intervals, and the like), but I have no idea how to do this problem. Any hints in the right direction would be greatly appreciated.