Speed of Sound and Light Lab8

# Speed of Sound and Light Lab8 - PHY 1033 2010 Lab#8 Speed...

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PHY 1033 2010 Lab #8 Speed of Sound and Light Ihas Nov. 2 Purpose: Use standing waves and the “wave equation” to determine the speed of electromagnetic and sound waves in air in our class room. Procedures: Find a new partner. You and your partner will perform the sound measurements together, and write up the analysis. We will do the light measurement together as a class. Speed of Sound Experiment Equipment: Large tube connected to water reservoir, meter stick, tuning forks, and your hearing (the detector). Background Research: In this experiment you will use the principle of resonance to determine the wavelength of a sound wave. If you know the frequency of a sound source you can then calculate the speed of sound using the “wave equation”: Speed of Sound (or any wave) = frequency x wavelength You are familiar with the concept of resonance, but perhaps never knew what it was called. In class we talked about pumping energy into swinging your little brother or sister, making the swing go higher and higher. You may have heard a vase across the room rattle when just one note on a piano was played. The frequency of that note just happens to be the natural resonant frequency of the vase.

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