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Do NOT write on these sheets or take them with you! The next class needs them too! PHYS-1200 PHYSICS II SPRING 2005 Class 13 Activity: Mechanical Waves Before You Start 1. A general expression for a wave is y ( x , t ) = y m sin( kx ± ϖ t ). If a wave is moving to the right (toward positive x ), which sign should be used in the above expression? Explain your answer. 2. Which (if any) of the following parameters of the above wave will change as the wave moves: amplitude y m , shape (sinusoidal), wavelength λ , or speed v ? Taking Data Open and view movie Wave.mov in VideoPoint, as follows. Go to the course web page, then to “class activities”, scroll to the bottom and double click on the file. If the file opens in quicktime, rather than VideoPoint, save the file on your computer and reopen it VideoPoint. If you don’t have VideoPoint loaded on your computer from last semester, ask your TA or Professor for a CD containing the software.
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