Waves: V = λf, Velocity of a Wave, Graphs: Displacement-Distance & Displacement-Time - IB Physics

I show several animations proving that the velocity of a wave is wavelength x frequency, create a displacement-distance graph and a displacement-time graph of a wave and discuss the information you can get from both, and use both types of graphs to solve for the velocity of a wave.

0:00 Proof that v = λf
1:45 Visualizing v = λf
3:59 Displacement-Distance Graphs
5:15 Displacement-Time Graphs
7:26 Combining graphs to solve for velocity

[tenzonium]

one of the better video lessons I've seen on wave graphs. Thank you.

[chloech]

life saver, thank you andy for these videos soo helpful

[dinamush]

Thanks so much, I found the different types of wave graph to be somewhat confusing, but this helped clear that up.

[rodomoyo]

i love these videos so much, i have my test tmr so i’m going through all the topic 4 vids

[erezengel]

Making uni much easier. Thank you great videos!

[mrkhunt.]

One of the questions for waves is about many dominoes standing next to each other. The question is, how to increase speed of the wave? My reasoning is that v = lambda x f. To increase speed, increase the wave length (or the distance between the dominoes). But it turns out that if I increase distance, then the time period for the wave is increased which reduces frequency proportionally. So does that mean that speed can never be increased? Where is the flaw in my reasoning and what is the answer according to you? Thanks!

[michaelgalario]

Hi, would just like know if half frequency is possible like 2.5 hertz? thanks