Two speakers emit sound waves of frequency 170 Hz. At some point A, the intensity of the intensity of each speaker is 10 mW/m2. The distance from A to the close speaker is 1.0 meters less than the distance from A to the far speaker. Assume a speed of sound equal to 340 m/s. What is the intensity at A if the speakers are exactly in phase? (Give your answer in mW.) What is the intensity at A if the speakers are exactly 180° out of phase? (Give your answer in mW.)
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 speakers emit sound waves of frequency 170 Hz. At some point A, the intensity of the intensity of each speaker is 10 mW/m2. The distance from A to the close speaker is 1.0 meters less than the distance from A to the far speaker. Assume a speed of sound equal to 340 m/s. What is the intensity at A if the speakers are exactly in phase? (Give your answer in mW.) What is the intensity at A if the speakers are exactly 180° out of phase? (Give your answer in mW.)
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