Today we are going to determine the speed of sound experimentally. Our results should be with 5% of the actual value knowing the ambient air temperature and the equation for the speed of sound. How did newton do it?
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Today we will be finishing our work using the Universal Wave Equation as well as calculations with period, frequency and wavelength. Watch the following videos for more help with this concept and see example solutions.
Today we are going to learn about periodic waves, frequency, wavelength, universal wave equation, and wave amplitudes.
Today you will do a short research assignment on the speed of sound. You can use a cellphone, computer, or the textbook to find the answers. You will learn about sound in space (is there any?), the speed of sound in air and how it depends on temperature, the mach number, sound barrier, sonic booms, etc. Watch the videos below as well...
[we are doing this lesson a bit out of order because I am away - we will pick back up tomorrow with periodic waves and then move into sound next week and pick back up from here] Sonic Boom Watch planes breaking the sound barrier - listen for the loud "boom" and "why is there a vapour build up around the plane?" Sonic Boom - The tip of a whip breaks the speed of sound! Today we are investigating what happens when waves hit a boundary: reflection, transmission, constructive interference, destructive interference, principle of superposition.
Today we will finish our introduction to Waves & Sound. We will then also do an investigation with slinky's about waves and look at waves at boundaries.
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June 2015
Christopher BraunGRADE 11 PHYSICS |