A towards a stationary ohserver at speed car Comes 72.00 km/hr , honking loudlyiand passes by, The pitch (freame Sound heard changes. t4 to the speed of sound in air as 340,0 mls Take observer listening a) Stationary By the gets away to the freueney car the frequency as it is approaching) are following the honking the same Speed, 72.00 km/hr, What is the ratio if the frequercy cars b) Now imagine that other with the frequency heard by the fallowing cars, of the honk is 1400 H c) Police Now imagine carilt catching up car is trying to catch the hor speed of 144,G km lhc police car comes from behind with a of the sound heard by the police of
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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