The displacement-distance graph of a wave pulse at $t=0$ is shown here. If the wave travels towards the right at a speed of $40 \mathrm{cm}/\mathrm{s}$, then show the displacement-distance graph of the wave pulse after $1 \mathrm{second}$.

 

 

 

What are the characteristics of a wave motion?

How do sound waves differ from radio waves?

Derive the relationship, $v=\lambda \times f$

Name three good reflectors of sound and three good absorbers of sound.

How do bats locate any obstacle during their flight?

Describe the inner parts of the human ear.