An ambulance is passing you by with sirens on. Choose the correct statement about the frequency of the sirens you hear if you are not moving and the ambulance is moving away from you. Group of answer choices The frequency you hear is higher than the original frequency of the sirens. The frequency you hear is lower than the original frequency of the sirens. The frequency you hear is the same as the original frequency of the sirens. It does not have enough information to determine if the frequency you hear is higher or lower than the original frequency of the sirens.
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.
An ambulance is passing you by with sirens on. Choose the correct statement about the frequency of the sirens you hear if you are not moving and the ambulance is moving away from you.
The frequency you hear is higher than the original frequency of the sirens.
The frequency you hear is lower than the original frequency of the sirens.
The frequency you hear is the same as the original frequency of the sirens.
It does not have enough information to determine if the frequency you hear is higher or lower than the original frequency of the sirens.
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