The way the displacement $y$ of a transverse wave on a rope varies with distance $x$ is shown at time $t = 0$. The wave has a frequency of $0.5\,\text{Hz}$. A point X on the rope is marked. The diagram shows the initial position of X together with four new positions. What is the position of X at time $t = 1\,\text{s}$?
Physics 9702 · AS & A Level · Progressive waves