In which of the three media,air,water,or iron,does sound travel the fastest at a particular temperature?

When a sound is reflected from a distant object,an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear an echo on a hotter day?

Which wave property determines $(a)$ loudness,$(b)$ pitch?

$A$ person is listening to a tone of $500$ $Hz$ sitting at a distance of $450$ $m$ from the source of the sound. What is the time interval between successive compressions from the source (in $s$)?

Give two practical applications of reflection of sound waves.

How does the sound produced by a vibrating object in a medium reach your ear?