1. PHASE
Starting phase
Point in displacement cycle at which the object begins to vibrate
Instantaneous phase
Point in displacement cycle at the time of measurement
Units: Angle (in degree or radian)

4. What is the starting phase of the following sine waves?

6. 6

7. 7

8. What is the instantaneous phase at time 0
What is the instantaneous phase at time 0.5 sec for each of these sine waves? 8

9. 9

10. Describe the following waves10

11. Describe the following waves11

12. Describe the following waves12

13. Sound transmission
Occurs as a series of condensations and rarefactions
Condensation: Area with high concentration of air particles.
Rarefaction: Areas with low concentration of air particles 13

14. Wave transmission Longitudinal transmission Transverse transmission 14