This is a simulation of a standard physics demonstration to measure the speed of sound in air. A vibrating tuning fork is held above a tube - the tube has some water in it, and the level of the water in the tube can be adjusted. This gives a column of air in the tube, between the top of the water and the top of the tube. By setting the water level appropriately, the height of the air column can be such that it gives a resonance condition for the sound wave produced by the tuning fork. In the real experiment, resonance is found by listening - the sound from the tube is loudest at resonance. In the simulation, resonance is shown by the amplitude of the wave in the air column. The larger the amplitude, the closer to resonance. Note that at certain special heights of the air column, no sound is heard - this is because of completely destructive interference.
In addition, there is always a node (for displacement of the air molecules) at the water surface. To a first approximation, resonance occurs when there is an anti-node at the top of the tube. Knowing the frequency of the tuning fork, the height of the air column, and the appropriate equation for standing waves in a tube like this, the speed of sound in air can be determined experimentally. What do you get for the speed of sound in air in this simulation?
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Aims of the Experiment. The aim of the experiment is calculate the speed of sound in air using a tuning fork and a tube of water; Variables: Independent variable = Air level in the tube; Dependent variable = Length of the air column in the tube where resonance occurs, L; Control variables: Temperature of the water; Frequency of the tuning fork
In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.
The speed of sound varies with temperature. In this experiment, we will choose a tuning fork of known frequency and determine the speed of sound in air by us...
Part I: Speed of Sound in Air. Longitudinal vibrations produced by a tuning fork are transmitted through the air into a plastic tube with an adjustable piston at one end (see the Figure 11.1). By suitably adjusting the length of the air column using the piston, standing waves are produced in it.
activity you will be using various tuning forks to determine the speed (v) of sound. When a tuning fork is set into motion, the sound produced will have a specific frequency and wavelength.
The speed of sound depends on properties of the medium such as bulk modulus, density, and temperature. To calculate the speed of sound in air, v, we will determine the wavelength, , of the sound produced by a tuning fork of known frequency, f: = v f. (Eq. 7-1).
Tuning fork: This is a simulation of a standard physics demonstration to measure the speed of sound in air. A vibrating tuning fork is held above a tube - the tube has some water in it, and the level of the water in the tube can be adjusted.
To determine the speed of sound in air, and to find the relationship between the velocity of a wave in a string, the linear density, and the tension. You will do this by performing two different experiments: Part 1: Speed of Sound in Air.
The speed of sound is not a constant value! To calculate today’s speed of sound, v, we will deter-mine the wavelength, (lambda), of the sound pro-duced by a tuning fork of known frequency, f: = v f. (12.1) A vibrating tuning fork generates a sound wave that travels outward in all directions.
To calculate the speed of sound in air, v, we will determine the wavelength, λ, of the sound produced by a tuning fork of known frequency, f: = v f. (Eq. 13-1). A vibrating tuning fork generates a sound wave that travels outward.