1.noise canceling earphones are an example of A. Constructive interference B. Destructive enterference C. Beat D. Resonance 2. The difference between absolute pressure and atmospheric pressure is called A. Air pressure B. Barometric pressure C. Gauge pressure D. Hydrostatic pressure B. 3. Consider the block of wood that floats with 60% of its volume above water. (the volume of the block is 0.5 m^3) a.What volume of water did the block of wood displace? 0.2 m^3 or 0.5 m^3 b. What is the buoyant force of water on the block of wood? Choose 1960N 2940N 3920N 4900N
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
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