A football fan sits in the upper deck of a large football stadium and has a portable sound device to cheer for his team. The device emits its sound equally in all directions, and it has the property that the sound is loud enough that someone sitting 500 m away on the other side of the stadium can hear it above the crowd noise of 90 dB. Will you sit 1m in front of the fan?

Q: How far away could you still detect a sound source with 100 mW of acoustic power released for 0.010…

A: The sound pressure level (SPL) of 30 dB re 20 µPa means that the sound has a pressure that is 30 dB…

Q: A person standing 1.10 m from a portable speaker hears its sound at an intensity of 7.90 X 10^-3…

A: Given:Distance of person from speaker, d=1.10 mIntensity, I=7.90×10-3 W/m2

Q: A loudspeaker is placed near the open end of a pipe length 417 mm closed at its other end. The…

A: Length of pipe (L) = 417 mm = 0.417 m Lowest resonant frequency = 228 Hz

Q: A point source emits a sound of 450 W of power, a small microphone with an area of ​​0.55 cm2…

A: Given data- A point source emits a sound of power P=450 W microphone area A=0.55 cm2 distance of two…

Q: Some hearing aids can help the wearer pick out a single voice in a room full of people talking. This…

A: How does a hearing aid help the wearer pick out a single voice in a room full of people talking.

Q: An outside loudspeaker (considered a small source) emits sound waves with a power output of 112 w.…

A:

Q: A 50.0 Watt stereo is played wide open… a) What will be the intensity of the sound 85…

A: Power of stereo (P) = 50 Watt distance (d) = 85 m

Q: ssume that the speed of sound is 343 m/s at 20 degrees C. Also assume that a bat uses an ultrasonic…

A:

Q: A Jackhammer from 1 meter away produces roughly 100dB of sound.  What is the sound pressure caused…

A: Write the expression for loudness

Q: It is found that the intensity level of sound from a loudspeaker is 35 dB at a distance of 35 m from…

A: Approach to solving the question:Sound intensity and power relationshipDetailed explanation:

Q: A violinist places her finger so that the vibratingsection of a 1.0g/m string has a length of30cm,…

A:

Q: The noise level in an empty examination hall (ambient noise) is 40 dB. When 100 students are writing…

A:

Q: You have been commissioned to design a pipe organ whose notes span the entire range of human…

A:

Q: The speed of sound in air is 343 m/s, while the speed of sound in metal-x is 1570 m/s. If an…

A:

Q: calculate tge intensity of the sound wave in (mW/cm^2) entering the body if the crystal generates…

A: Given: Crystal generates: 100 mW/cm2sound traces from crystal: 11 M raysMatching layer: 7M…

Q: A power output of 100 W is produced by an outside loudspeaker. If you consider sound waves and the…

A:

Q: Assume you have two loudspeaker separated 1 meter excited by the same oscillator emitting a 1150 Hz…

A:

Q: seven meters from a spherically symmetric sound source the decibel level is 92 dB, what is the power…

A:

Q: person at a concert is 4.15 m from one speaker and 4.35 m from another speaker. The sound produced…

A:

Q: Ralph's ear canal is 2.67 cm long. If it is regarded as a tube that is open at one end and closed at…

A: Given, Length, L=2.67 cm=0.0267 m, and the speed of sound, v= 345 m/s.

Q: You have a job in a biomedical engineering laboratory working on technology to enhance hearing. You…

A: Ear Canal as a tube open at one end Length of ear canal = 2.7cm = 0.027m Speed of sound in air =…

Q: A person stands at rest in front of a large smooth wall. Between him and the wall he golds a tuning…

A: The number of beats per second is the difference in frequencies between the sound waves directly…

Q: There is an explosiononthe surface of a lake. There is a boat 1.50 miles awayfrom the explosion. One…

A:

Q: A science museum has a display called a sewer pipe symphony. It consists of many plastic pipes of…

A: The frequencies heard by a visitor's ear near the ends of the pipes can be determined using the…

Q: A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the…

A:

Q: The sound intensity from a jack hammer breaking concrete is 2.40 W/m2 at a distance of 1.90 m from…

A:

Q: A firework explodes 100 m above the ground, creating a colorful display of sparks. How much greater…

A:

Q: Jim stands a distance of 3.01 m from one speaker and 4.39 m from a second. The speakers are in-phase…

A:

Q: At a rock concert, a 10 kW speaker is located on one side corner of the stage. If 2% of the speaker…

A:

Q: A baseball hits a car, brcaking its window and triggering its alarm which sounds at a frequency of…

A: Original frequency = 1190 Hz Speed of boy (observer) = 7.8 m/s away from the car (source) Speed of…

Q: reduce the of sound by 25%. How far bac must you sit in order to hear the

A:

Q: . Two loudspeakers face each other at opposite ends of along corridor. They are connected to the…

A: Given data: Frequency of source,fS=282 Hz Speed of person, vo=1.6 m/s Speed of sound, v=340 m/s…

Shock Waves

Shock waves are common in continuum mechanics, and their dominance is attributable to the fact that they are stronger (or even less) compressible. Substantial perturbations propagated as sudden dynamic changes of a compressible medium supersonically. Shock waves are all around us in our daily lives. Lightning, earthquakes, volcanic eruptions, and meteorite impact all produce them in nature. Even the earth, which is protected by its magnetic field, generates a shock wave as in solar wind that travels around 20 Earth radiuses. These shock waves might be either constant, linked to the body, or unsteady, i.e., moving around with time. All of the shocks mentioned above can be damaging, so precautions must be taken to reduce their impact.