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Newton's first law expresses the principle of inertia: the natural behavior of a body is to move in a straight line at constant speed. A body's motion preserves the status quo, but external forces can perturb this. The modern understanding of Newton's first law is that no inertial observer is privileged over any other.
In short, sound is a branch of mechanics, and so it is to be understood in terms of Newton’s laws. The propagation of sound from one place to another is merely a consequence of mechanics and the properties of gases, if it propagates in a gas, or of the properties of liquids or solids, if it propagates through such mediums.
The first law of motion, also known as the law of inertia, is one of the three laws formulated by Sir Isaac Newton in his groundbreaking work Philosophiæ Naturalis Principia Mathematica. This law states that an object at rest will remain at rest, and an object in motion will continue moving in a straight line at a constant speed, unless acted ...
A disturbance is anything that is moved from its state of equilibrium. Some sound waves can be characterized as periodic waves, which means that the atoms that make up the matter experience simple harmonic motion. A vibrating string produces a sound wave as illustrated in Figure 14.2, Figure 14.3, and Figure 14.4. As the string oscillates back ...
- Introduction
- Amplitude, Intensity, Loudness, Volume
- Speed of Sound
- Frequency, Pitch, Tone
- Human Hearing and Speech
Sound is a longitudinal, mechanical wave. Sound can travel through any medium, but it cannot travel through a vacuum. There is no sound in outer space. Sound is a variation in pressure. A region of increased pressure on a sound wave is called a compression (or condensation). A region of decreased pressure on a sound wave is called a rarefaction(or ...
Amplitude goes with intensity, loudness, or volume. That's the basic idea. The details go in a separate section. [ISO 226:2003] 1. Unlike our ears and hydrophones, fish ears don't detect sound pressure, which is the compression of molecules. Instead, they perceive something called particle motion, the tiny back-and-forth movements of particles in r...
The speed of sound depends upon the type of medium and its state. Sound generally travels faster in solids than in liquids than in gases. The speed of sound in a medium is generally affected by two things: elasticity and inertia. This is the Newton-Laplace equation. Laplace added the γ(gamma) correction factor for ideal gases. For ideal gases…
The frequency of a sound wave is called it pitch. High frequency sounds are said to be "high pitched" or just "high"; low frequency sounds are said to be "low pitched" or just "low".
Humans are generally capable of hearing sounds between 20 Hz and 20 kHz (although I can't hear sounds above 13 kHz). Sounds with frequencies above the range of human hearing are called ultrasound. Sounds with frequencies below the range of human hearing are called infrasound. 1. Typical sounds produced by human speech have frequencies on the order ...
Many Physics demonstration tuning forks are mounted on a sound box. In such instances, the vibrating tuning fork, being connected to the sound box, sets the sound box into vibrational motion. In turn, the sound box, being connected to the air inside of it, sets the air inside of the sound box into vibrational motion. As the tines of the tuning ...
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3 days ago · Sound is a mechanically propagating pressure wave in a material medium, and is a typical example of longitudinal wave. When in a certain range of frequency, it causes the sensation of hearing. Sound energy, like light energy, obeys the laws of reflection: Its angle of incidence is equal to the angle of reflection. Incident wave, reflected wave, and the normal lie in the same plane. The ...
