64 A stationary detector measures the frequency of a sound source that first moves at constant velocity directly toward the de- tector and then (after passing the detector) directly away from it. The emitted frequency is f. During the approach the detected fre- quency is f'app and during the recession it is free. If (f'app - free)/f = 0.500, what is the ratio v/v of the speed of the source to the speed of 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.
Please show all the steps and the equation required in each case.
Step by step
Solved in 6 steps with 6 images
