MECHANICAL WAVES and SOUND
A mechanical wave is a disturbance that propagates in a mechanical medium.
Mechanical waves transmit energy. Mechanical waves do not transmit mass. The speed
of a mechanical wave depends on the mechanical properties
It was discovered that some ores or metals experienced forces of attraction or repulsion
when brought close together. This force was called magnetism. The magnetic materials
were dipoles with one pole called south and the other calle