The air is humid and 80 F when you hear a nuclear alertsiren [1500 Hz], and it’s not a test. You jump in your car to drive away from the sound and quickly accelerate to the maximum speed you can handle on the country road; at 60 mph or 88 feet/sec! The speed of sound in air at 32 F is 331 m/sec—at what frequency will the you hear the ear-piercing siren?
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 air is humid and 80 F when you hear a nuclear alertsiren [1500 Hz], and it’s not a test. You jump in your car to drive away from the sound and quickly accelerate to the maximum speed you can handle on the country road; at 60 mph or 88 feet/sec! The speed of sound in air at 32 F is 331 m/sec—at what frequency will the you hear the ear-piercing siren?
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