$A$ man stands $33\, m$ from a high wall and claps his hands. Will he hear an echo? (Given,velocity of sound is $330\, m s^{-1}$)

$(a)$ List in tabular form the distinguishing features between longitudinal waves and transverse waves. Give an example of each.
$(b)$ State and define the characteristics associated with sound waves.

The distance between the crest and trough of a transverse wave is $15 \, cm$. What is the velocity of the wave if its frequency is $1000 \, Hz$?

How do you account for the fact that two strings can be used to give notes of the same pitch and loudness but of different quality?

$(i)$ Which property of sound wave determines:
$(a)$ loudness
$(b)$ pitch?
$(ii)$ $A$ $SONAR$ station picks up a return signal after $3 \ s$. How far away is the object? (Speed of sound in water is $1440 \ m \ s^{-1}$)
$(iii)$ How can reverberations in a big hall or auditorium be reduced?

$(a)$ Briefly mention three uses of ultrasound in the field of medicine.
$(b)$ $A$ ship which is stationary is at a distance of $2800 \ m$ from the sea-bed. The ship sends an ultrasound signal to the sea-bed and its echo is heard after $4 \ s$. Find the speed of sound in water.