1. The problem statement, all variables and given/known data How is longitudinal wave spread? http://s11.postimg.org/pm7hxibo3/vala.png Here is how the transverse wave is spread in T/4, T/2, 3T/4, T (T- period) I need the same graph for the longitudinal wave. 2. Relevant equations X=c*T (c-velocity of moving of the wave) 3. The attempt at a solution https://www.google.al/search?q=long...KHW--DHkQ_AUIBygB&dpr=1#imgrc=NCmiLxCD1edSYM: In this picture it is shown a longitudinal wave. How can I show how it is spread in T/4, T/2, 3T/4, T? Where will the rarefaction and compression be in different times?