Thanks for your quick reply, I actually understand question 2 now, I had absolutely no idea before!
However, you said that both waves are at their highest displacement at P when t = 1. I can see why the wave on the left is, but why the wave on the right? The wave on the right has a vertical...
Hey everyone, I've just stumbled across this forum on Google while trying to find something to help me understand a question.
I've just started studying physics at AS level at sixth form, and I've been given this piece of homework, with the teacher not explaining it too well, so, I'm stuck...