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Kata kunci: bunyi – ultrasonik – infrasonik – audiosonik – resonansi – nada – gaung – gema
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Jumat, 19 Februari 2010
Senin, 08 Februari 2010
Expansion G7
In this chapter, we will learn the topics as follows :
A. The definition of expansion.
B. The expansion of solids
C. The expansion of liquids
D. The expansion of gases
E. The expansion principle in everyday life
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A. The definition of expansion.
B. The expansion of solids
C. The expansion of liquids
D. The expansion of gases
E. The expansion principle in everyday life
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Sounds G8
Sound is a travelling wave which is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by such vibrations.
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Jumat, 05 Februari 2010
Waves material G8
Vibration is an oscilating movement through a point of equilibrium.
You’ve probably seen a clock pendulum swing back and forth. You would have noticed that every swing followed the same path, and each trip back and forth took the same amount of time. This action is an example of vibrational motion. Other examples include a metal block bobbing up and down on a spring and a vibrating guitar string. These motions,
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You’ve probably seen a clock pendulum swing back and forth. You would have noticed that every swing followed the same path, and each trip back and forth took the same amount of time. This action is an example of vibrational motion. Other examples include a metal block bobbing up and down on a spring and a vibrating guitar string. These motions,
More complete download over here
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