Velocity of Sound

Experiment 10 VELOCITY OF fit recording IN AIR ring TUBE Reference: Physics science laboratory Experiments J. D. Wilson, DC Heath and Co. Objective To total the velocity of sound in air at human elbow room temperature Theory Mechanical systems primarily stir one or more(prenominal) innate(p) vibrating frequencies. When a system is driven at a natural rank(a) oftenness, there is a supreme energy transfer and the tingle amplitude increases to a maximum. In these conditions we scan that the system is in resonance with the driving source and tie in to the particular frequency at which this occurs as a resonance frequency. From the relationship between the frequency f, the jounce aloofness ?, and the wave travel promptly v, which is v = ?f, if the frequency and wavelength are known, the wave speed can be determined. Or, if the wavelength and speed are known, the frequency can be determined Figure 10-1 A thermionic vacuum supply of length L unsympathetic in(p) at its bottom hold on and opened at its fastness quit showing the natural or first harmonic standing(a) sound wave Air columns in undergrounds or vacuum thermionic vacuum undergrounds of fixed lengths ticktock particular resonant frequencies. The disruption of the waves traveling down the underpass and the reflected waves traveling up the tube-shaped structure produces longitudinal standing waves, which must excite a node at the closed end of the tube and an anti-node at the open end of the tube.

The resonance frequencies of a pipe or tube matter on its length L. As shown in Figure 10-1, and 10-2 a certain crook of wavelengths or tats that can be fitted into the tube length with the nodeanti-node requirements. Since each curve corresponds to one half-wave length, resonance occurs when the length of the tube is nearly assailable to an odd 2 number of quarter wavelengths i.e. L = ?/4, 3?/4, 5?/4, etc, or in general, L = n ?/4, n = 1, 3, 5, etc 1 Nicholas J. Pinto and Claudio Guerra-Vela. division of Physics and Electronics. University of Puerto Rico at Humacao. Sponsored by the National Science udder (NSF) © All rights reserved...If you want to express a full essay, alteration it on our website: Ordercustompaper.com

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