Physics Speed of Sound Lab Report

Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.

I took the graduated cylinder and started filling it up with water until the bottom of the meniscus was to the the 100.0 mL mark with the assistance of a dropper pipet. I then took the 13 x 100 mm test tube and slowly poured the water from the graduated cylinder into the test tube until it was full to the top. I then poured the water in the test tube out into the sink and put the graduated cylinder on the counter so I can get an accurate measurement of the lower meniscus to record on my data table. I once again followed the same procedure again filling a second test tube with water from the graduated cylinder then setting it on a straight surface to get an accurate measure of the volume to

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.

Abstract: This experiment introduced the student to lab techniques and measurements. It started with measuring length. An example of this would be the length of a nickel, which is 2cm. The next part of the experiment was measuring temperature. I found that water boils around 95ºC at 6600ft. Ice also has a significant effect on the temperature of water from the tap. Ice dropped the temperature about 15ºC. Volumetric measurements were the basis of the 3rd part of the experiment. It was displayed during this experiment that a pipet holds about 4mL and that there are approximately 27 drops/mL from a short stem pipet. Part 4 introduced the student to measuring

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

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.

Dispense .5 mL water into the already weighed conical vial, replace cap and face insert on its down side.

After finding the speed we can predict what the smallest frequency is to create a standing wave. This is known as the first harmonic which is also known as the fundamental frequency. Throughout this experiment we place different weights on the end of the string, because of this different tensions are created and the speed is calculated differently. We do this in order to examine how the different tensions of the string can create different frequencies for

Musicians know that all vibrating objects make sounds. Frequency measure how many times a string vibrates up and down. If a musician changed the length of the string, it also changed the frequency. High frequency will always equal a high pitch. When an octave is increased the frequency will double. Pythagoras discovered different sounds could be made with different weight and vibrations. Due this discovery, they also realized pitch could be controlled by the length of the string.

It is suggested that the procedure for this lab be modified to be more clear on how the experiment is performed for each type of wave, particularly the P waves. The group was unsure starting out on how to move the Slinky to produce an accurate representation of a P wave, and the diagram did not clear this

The experiment begins the positioning of the mechanical driver. Apply some tension to the string by adding weight to the end of the pulley system. Place the driver at 1 meter away from the non-fixed end of the standing wave. In this case, the pulley is the non-fixed end. Be sure to measure from where the string makes contact with the pulley, not where the

Connect the red of the coax cable from CH1 to the PROBE COMP lug just below the WAVEFORM OFF button to the left of the CRT screen. The ground clip on the probe can be left unconnected in this part of the experiment. The square wave calibrating signal should now be displayed on the CRT.

Ultrasonic flaw inspection systems work on the basic principle that sound waves are mechanical vibrations of particles in a medium. The speed of the wave in a given medium is predictable along with the direction it will travel in. When the wave reaches a boundary with a different medium or acoustic impedance, the speed and direction will change according to a set of simple rules.

In last months, my centre of attention was on understanding the qualification of atmosphere factors perturbation in sound speed and comparing different acoustic tomography methods. Then, these techniques have been applied to series of synthetic and obtained data from field trials.

In this activity, a Vernier microphone and a computer were used to know the speed of sound based on the graph and the values produced on the computer screen. The microphone was placed near the open end of a closed tube and a member of a group snapped his fingers near the tube to determine the speed of sound. The time interval was determined with the start of the first vibration and the start of the echo vibration. The noted time interval was the time for sound to travel through the tube and back. The speed of sound was computed by dividing the length of the tube by ½ of the time interval. The computed experimental speed was 355.47 m/s. The calculated percent error was 2.60% and it was not that large compared to the percent errors in the first activity. The causes of errors in this activity could be some mistakes in the computations particularly in estimating values, and probably the graph produced was not that perfect.