Two students are standing the same distance from a source of sound. The first student receives a poiwer of 112 x 10^-6 W in their eardrum. The second student receives 1.22 times more power in their eardrum. A) What is the ratio of the diameter of the student's eardrums? (A numerical value is expected and not an expression.) B) If the second student's eardrum has a diameter of d=1cm what is the intensity of the sound that student heard, in watts per square meter?
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.
Two students are standing the same distance from a source of sound. The first student receives a poiwer of 112 x 10^-6 W in their eardrum. The second student receives 1.22 times more power in their eardrum.
A) What is the ratio of the diameter of the student's eardrums? (A numerical value is expected and not an expression.)
B) If the second student's eardrum has a diameter of d=1cm what is the intensity of the sound that student heard, in watts per square meter?
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