You and your friend end up playing violins in a concert. You two are playing identical, in-phase, sinusoidal waves of a single frequency. You are 4.0 meters apart. You find there are quiet spots and loud spots in the room indicated by the diagram. The grid lines are spaced at 1.0 meter. Assume the speed of sound is 343 m/s. Quiet 1.0 m Source 1 Loud Quiet Source 2 i) What is the path length difference for the two sound waves reaching the loud spot? Is this constructive or destructive interference? ii) What is the path length difference for the two sound waves reaching either of the quiet spots? Is this constructive or destructive interference? iii) What is the wavelength (2) of this sound? iv) What is the frequency (f) of this sound?
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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