A warehouse building has two open doors along one wall as shown in the figure. The walls of the warehouse are lined with a sound-absorbing material. Two people stand at distance L = 103m from the wall with the open doors as shown. A train runs past the warehouse, blowing its horn to produce a loud sound with a frequency of 581 Hz. To person A, the sound of the train is loud and clear. To person B, the sound is barely audible. Assuming that person B is at the position of the first minimum in the sound interference pattern, determine the center-to-center distance d between the doors. Assume room temperature air. Image size: s ML Max В open door y=20 m d open door (figure not to scale)
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.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
