Application of sound waves

Physics SSS2 Third Term

Sub Theme: Waves Motion without Material Transfer

WEEK 8

Application of sound waves

Performance Objectives

Students should be able to;

1. Classify musical instruments into wind instruments, string instruments and percussion instruments. 
2. Explain the physical principles involved in the use of wind, string and percussion instruments.
3. Use the reflection of sound to explain echoes.
4. Give an application of echoes.

Velocity of sound Waves

Content

Since there are three states of matter, it means there must be three velocities for the three states, because experimentally three states are not the same. The velocity varies from medium to medium.

The velocity of sound in air, for dry air at 0⁰C is approximately 330m/s, but at room temperature,…