Velocity of Sound

The sound waves are produced by a random oscillating crystal, and are inaudible to humans. A instrument called a

The purpose of this experiment is to measure the speed of sound in air and to determine the effects of frequency on the speed of sound.

The purpose of this laboratory experiment is to “investigate how the vibrating source affects selected characteristics of the sound produced” (Giancoli, 2006).

The first part of our machine was the marble going down the Clickedell. We dropped a marble down the Clickedell which produced sound,

The speed of sound is roughly vs=340 m/s (1100 feet per second), and hearing an echo requires at least

An Ultrasound Technician, also known as diagnostic medical sonographers, use high-frequency sound waves to create images of soft tissue in a patient's body. Physicians use these images to diagnose abnormalities and diseases in a patient. As early as 1826, a Swiss physicist name Jean-Daniel, had effectively used an underwater bell to determine the speed of sound in the waters of Lake Geneva. In the late 1800s, physicists were working successfully towards defining the fundamental physicists of sound waves, transmission, propagation, and refraction. Lord Rayleigh was the first to describe sound waves as a mathematical equation, forming the basis of future practical work in acoustics. Lord Rayleigh famous work “the Theory of Sound” was published

Sound is made if something vibrates. If something moves back and forth rapidly, the air moves too and makes waves. These movements are called sound waves or vibrations. Vibrations that travel through the air or another medium and can be heard when they reach a person's ear. Make sound tubes to explore different sounds of objects. Connect movement by shaking the tubes fast, slow, etc.

In theory, a louder sound is expected when the resonance has occurred. In this lab, background information about resonance and standing waves was used to predict the length of the air column (resonance tube) that will support the first and second harmonics for a tuning fork. Tuning forks are available in different frequencies, for the purpose of this experiment a 480 Hz tuning fork was

And both forms of entertainment of radio and television broadcast has much to do with sound behavior. And this video being heavily integrated with sound, an aspect of physics. To my belief, this video was design to persuade or to catch the interest of young Americans to be familiar or to pursue a life into STEM fields. To encourage students to learn math, science, physic, engineering. To change the world in the hearth of America.

This paper demonstrates the existence of standing sound waves and superpositional wave interference in single-side open tubes through measurement using a microphone. Relations used in modeling are given and referenced consistently throughout the paper. The measurement data supports the conclusion in a clear manner.

Sound has different properties in water than it has in the air; it travels much faster and further than that of in the air. So many sea animals have poor vision and rely upon sound as a primary sense. As well as sea animals and fish also use and respond to underwater sound. Noise pollution can cause deafness and interference with fish communication, schooling and habitat utilization (Weilgart 2008). There is also a possibility that marine mammal’s ability to catch prey can be interrupted and blocked through noise pollution which also impacts communication between group members. This can cause navigational errors which have been shown to lead to mass standings’. It can be difficult for whales to distinguish between some noises

During our tests, we tested four string lengths, 20 cm, 30 cm, 40 cm, and 50 cm. We tested each of the string lengths three times. We released it from the 10-degree amplitude and did not add any washers to the pendulum. (We controlled all variables except string length). We timed 10 swings (back and forth) and then divided the swings [10] by the seconds for frequency. We then took the average of the frequencies of all three tests and averaged it for the final average frequency per string length.

Have you ever wondered why glass bottles made a sound, kind of like a music note? Well, this paper will explain how this works. The paper will be talking about sound, sound waves, standing waves, musical note names and frequencies, resonance, and closed-end air columns. Closed-end air columns will be a main focus in the paper, studying the physics behind it. Glass bottles are an example of a closed-end air column. Therefore, the more water inside the bottle, the lower the note, and less water would be a higher note.

The red bar on the left acts as the driving piston. If it moves in a sinusoidal manner from left to right, then the wave that is produced will be a sinusoidal wave. Since the wave is sinusoidal, the wavelength, amplitude and frequency are constant. This is seen in nature as a tuning fork, which produces a periodic sound wave. In a one dimensional tube as shown above, each particle undergoes simple harmonic motion. The volume that is contained in one wavelength also undergoes this same motion. We can represent the displacement of this volume as:

Absorption is one of the draw backs for underwater acoustic channel caused by the water viscosity, which depends on temperature and salinity (for larger frequencies), and the chemical composition of the seawater (for