Physics Mastery Lab

The length of five spaces in a scale is known as a perfect fifth (Shah 42). C major and A minor start at the head of the circle (Shah 42). At the head of the circle going clockwise, notes rise at a rate of fifths and do not stop until a limit of seven sharps is made (Shah 42). Going counter-clockwise, the notes go down at a rate for fourths until a limit of seven flats is met (Shah 42). When the very end of the circle is reached, six flats and sharps will have overrun each other (Shah 42). Also on the circle, one will begin at a certain pitch, skip twelve tones, and make it back to the pitch they started with (Shah 43). Pitch is in relation to the wave’s frequency (Petersen 1). The pressure vibrates rapidly wit high notes because of their high frequency (Petersen 1). Volume and pitch are the two attributes that make up sound (Petersen 1). Noise level and volume are in relation to the pressure’s amplitude (Petersen 2). The force per unit area, Pascals, is usually used to calculate pressure (Petersen 3). Frequency is equal to string length (Petersen 3). The rate of a frequency of noise of at least two tones is known as musical interval (Shah 20). A geometric sequence is fashioned from the frequencies of an octave (Petersen 4). An exponential function would be seen if such a sequence was graphed (Petersen 4). An

The purpose of this lab is to understand the relationship between the frequency and wavelength. After inserting a pipe into a water container and placing a vibrating tuning fork of a specific frequency near the opening of the pipe, the pipe requires an adjustment in height until the resonating sound becomes loud and clear. When the resonating sound is found at a certain length, measure the length of the pipe above water level with a meter stick. Since the water inside the container acts as a barrier for the sound wave, the pipe becomes a one-sided closed tube; and thus, the wavelength is four times the measurement of the length. Furthermore, the velocity of the wave is the product of wavelength and frequency.

Ultrasonic testing utilizes sonic waves which have a higher frequency than human being hearing range. In solids, the ultrasonic pulses are spread and reflected almost similar to light. The ultrasonic pulses are reflected when the pulses reach the back wall of the test specimen, the reflected pulses are not the same as those sent from the test specimen. The duration taken for the sound pulses to leave the array and

-“The wave disturbance travels 300 m for each wavelength.” The speed of the wave does not determine how long the wave disturbance travels for each wavelength. We do not have enough information to determine that.

Sound waves are nothing more than an energy transfer through a medium be it through a liquid, solid, or a gas. Sound pressure or intensity is measured on logarithmic scale in decibels dB which increases on an order of magnitude. For instance a quiet conversation would be around 30 dB and whereas the human pain threshold would be just over 100 dB. While the pitch or frequency of the sound is measured in hertz or Hz, the higher the hertz the higher the pitch of the sound and vice versa (Hildebrand, 2004).

12. Change to pulse, fixed end with zero dampening and high tension. Send a pulse and observe what happens to the reflected wave. Sketch the pulse shape before and after the reflection with the fixed end.

Detects different physical characteristics of pressure waves: • Pitch: perception of the frequency of sound waves (umber of wavelengths that pass a fixed point in a unit of time) • Loudness: the perception of the intensity of sound (the pressure exerted by sound

Sound is apart of our everyday lives. Regardless of if it's the sound of a leaking water faucet, the tapping of a pencil or even the whistling of wind, we’re surrounded by the physics of sound at all times. Sound waves come in various

"What it is telling us is the sound is located between about 7,000 kHz and 8,000 kHz. There are about 20 peaks, and they seem to be equally spaced. All these peaks correspond to a different frequency," said Kausik Sarkar, an acoustics expert and engineering professor at The George Washington University who reviewed the recording with the AP.

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

Unlike a wire sounder tested and rejected earlier in the voyage, the Baillie sounder was able to move within the ship’s existing system of instrumentation and materials. As with HMS Sylvia, sounding was conducted from the mainyard, and a steam engine on the deck helped to retrieve the sounder from the ocean floor. Similar to the Hydra, officers timed and calculated the Baillie’s rate of decent. When the sounder slowed, the ocean’s depth was ascertained by the length of the sounding line.

In this experiment, the study done by Bransford and Johnson (1972) will be replicated. Their participants heard a long speech, under

HS-PS4-1. Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media

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.

The experiment was conducted in four pigeon operant chambers (29.5 cm long, 25 cm wide, 30 cm high) in a sound-attenuating enclosure. The chambers were constructed from sheet metal with perplex front and back panels and a floor of iron bars. A house light was located at the top center of the back panel