# Physics

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1. What is wavelength?
Distance between any two consecutive identical points along a wave; distance interval for wave repitition.
2. what is amplitude?
• 1/2 of crest to trough distance.
• maximum displacement for equilibrium on either side.
3. What is a crest?
Point of maximum positive displacement. a+ peak.
4. what is a trough?
a maximum negative displacement; a - peak
5. what is Equilibrium?
Point (or line) of Zero displacement; undisturbed position.
6. What is a Cycle?
• One complete vibration or Oscillation.
• The distance measured from crest to crest.
7. What is a Period?
• The time it takes for one wave to repeat itself.
• Time / # of Cycles
8. What is Frequency?
# of Cycles/ time
9. A moving distrubance requiring a material medium to move in it is called
Machanical Wave
10. A wave in whcih the medium vibrates parallel to the direction of wave travel is a
Longitudinal wave
11. As a mechanical wave travels, it transfers an amount of------ related to the waves amplitude.
energy
12. Frequency has a SI unit of
Hz (or s-1)
13. What does SHM stand for?
Simple Harmonic Motion
14. At a constant speed, if the wavelength increases, then the frequency of the wave must
decrease
15. if the wavelength increases, then the speed of the wave must...
stay constant
16. the relationship between wavelenth and frequency is a(n)
inverse relationship
17. The speed of an mechanical wave can be varied only by changing the
medium.
18. If a wave propigates at one cycle every 1 second, then it has a ____ of 1s.
period
19. Period is defined as
time for one cycle
20. This is not an example of SHM
a record rotation on a turntable..
21. this is an example of SHM
a child swinging on a swing.
22. amplitude is defined as the
maximum displacement from equilibrium
23. For SHM where do the force and acceleration have maximum magnitude?
At the crest and the trough of a wave.
24. For SHM where does maximum velocity occur?
At equilibrium
 Author: bailesxlove11 ID: 67888 Card Set: Physics Updated: 2011-02-21 19:40:14 Tags: Waves Folders: Description: SHM and waves Show Answers: