1. 11-9 Shock Waves and Sonic Boom
Supersonic means traveling faster than the speed of sound…the speed is given as a Mach number
… x sos/sos.
A shock wave is a very large wave built by constructive interference.
The bow-wave of a boat would be an analogy for the shock wave caused by a jet.
The angle of the apex of the shock-wave can be found by the equation … q=vsound /vobject

2. 12-10 Applications of Sound
Sonar…SOund Navigation And Ranging
Ultrasound… sos in body 1,500 m/s …smallest wavelengths are about 1.5 mm…the smaller the wavelengths of sound used in ultrasound or sonar, the smaller the objects that can be detected.
Pulse-Echo Technique

3. Homework (add to Monday)
P and 63