The sound from a trumpet radiates uniformly in alldirections in 20°C air. At a distance of 5.00 m from the trumpet thesound intensity level is 52.0 dB. The frequency is 587 Hz. At what distance is the sound intensity level30.0 dB?
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.
The sound from a trumpet radiates uniformly in all
directions in 20°C air. At a distance of 5.00 m from the trumpet the
sound intensity level is 52.0 dB. The frequency is 587 Hz. At what distance is the sound intensity level
30.0 dB?
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