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Describe physically what the "speed of sound" represents. What kind of pressure changes occur in air sound waves during ordinary conversation?

Kelton Molina 2022-09-26

Simple ear-protection devices use materials that reflect or absorb sound before it reaches the ears. A newer technology, sometimes called noise cancellation, uses a microphone to produce an electrical signal that mimics the noise. The signal is modified electronically, then fed to the speakers in a pair of headphones. The speakers emit sound waves that cancel the noise. On what principle is this technology based? What kind of modification is made to the electrical signal?

skilmarka8j 2022-09-26

Why are sound waves in air longitudinal?

amhailim 2022-09-25

Compare the travel distance and energy of high and low intensity sound waves. Identify which wave will travel farther, and which wave will lose its energy more quickly.

kjukks1234531 2022-09-25

A certain microphone placed in the ocean is sensitive to sounds emitted by dolphins. Io produce a Usable signal, sound waves striking the microphone must have a decibel level of 10 dB. If dolphins emit sound waves with a power of 0.050 W, how far can a dolphin be from the microphone and still be heard? (Assume the sound waves propagate spherically, and disregard absorption of the sound waves)

clasicaacyx 2022-09-25

A guitar string oscilates at a frequency of 100 Hz and produces a sound wave (a) What do you think the frequency of the sound wave is that the vibrating string produces? (b) If the speed of the sound wave is v = 343 m/s, what is the wavelength of the sound wave?

Julia Chang 2022-09-25

In which medium would you expect the speed of sound waves to be greater, a chocolate candy bar or a chocolate cake? Explain.

trapskrumcu 2022-09-25

Four sound waves are to be sent through the same tube of air, in the same direction:
$s_{1} (x, t) = (9.00 n m) \cos (2 π x - 700 π t)$
$s_{2} (x, t) = (9.00 n m) \cos (2 π x - 700 π t + 0.7 π)$
$s_{3} (x, t) = (9.00 n m) \cos (2 π x 700 π t + π)$
$s_{4} (x, t) = (9.00 n m) \cos (2 π x - 700 π t + 1.7 π)$
What is the amplitude of the resultant wave?

pulpenoe 2022-09-25

An ambulance has a siren producing sound waves of frequency 2000 Hz and moving towards a listener standing on a bus stop. If the frequency heard by him is 2150 Hz. Find speed of ambulance. (Speed of sound 340 m/s)?

traffig75 2022-09-25

Sound waves hitting the eardrum set it into motion. Trace the pathway of vibrations from the eardrum to the spiral organ of Corti, where the hair cells are stimulated.

maredilunavy 2022-09-25

Explain why sound waves travel faster in liquids or solids than in air.

kakvoglq 2022-09-24

A biologist builds a device to detect and measure the size of insects. The device emits sound waves. If an insect passes through the beam of sound waves, it produces a diffraction pattern on an array of sound detectors behind the insect What is the lowest-frequency sound that can be used to detect a fly that is about 3 mm in diameter? The speed of sound is 340 m/s.

tamnicufl 2022-09-24

Why can you hear someone standing around the comer of a building but not see them?
A. Sound waves diffract around the corner, but light waves do not
B. Sound waves interfere around the comer, but light waves do not
C. Sound waves reflect around the corner, but light waves do not.
D. Sound waves refract around the corner, but light waves do not

Stacy Barr 2022-09-24

The speed of sound in sea water is about 1422 m/s. If a sound wave has a frequency of 289 Hz, what is its wavelength in sea water?

Hana Buck 2022-09-23

Give three examples of mechanical waves. How are these different from electromagnetic waves, such as light waves?

sombereki51 2022-09-23

How telephones convert sound to electrical signals and electrical signals to sound?

fion74185296322 2022-09-23

A uniform circular tube closed at one end is an example of what kind of resonance?

Haven Kerr 2022-09-23

How much greater is the intensity of a 25-dB sound than a 15-dB sound? What would be the intensity in dB for a sound that is 100 times louder than the 25-dB sound?

tarjetaroja2t 2022-09-23

The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 23 to 61 dB.
What is the ratio of the final sound intensity to the original sound intensity?

Haven Kerr 2022-09-22

Why it is said that propogation of sound waves is an adiabatic process?

Sound waves are a type of energy that travels through the air, or any other medium, like water or metal. They are created by vibrations, which are produced when something vibrates. The vibrating object causes the air around it to vibrate too. Sound waves are usually described by how fast they vibrate, or their frequency. The faster the vibration, the higher the pitch of the sound. The slower the vibration, the lower the pitch. They can solve problems in physics. For example, equations can be used to calculate the speed of sound waves. Answers to questions about waves and sound can also be found by using sound waves.

Wave motion

Sound Waves Made Easy: Learn with Examples, Equations, and Expert Tips