PHYS 131 final: Phys 131 Final Study Guide 4-4
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2 points of the medium that are a distance ax apart. A-0=2+1 / a ) conditions : in - phase : out of phase :( 020-0101=17. 2 waves tells us if its constructive / Top speaker must travel further than bottom. In - phase :a0o=0 constructive speed of sound-340. A path = 21t / 5t / = 51t constructive :s, &sz have same inherent phase difference , a o. = 21t / path) + aoi inherent phase diff. Sum of initial phase diff due to diff path length (cid:8869) Next smallest separation ? f- =/ ) ax=d= 1. 0m solve for ax. "yr s, lines: crest 1highest -1a) between crests are troughs ( highest - a) A- = 712 m=0 m= -1 ax - destructive. Usually moves along straight lines (cid:8869) spreads out when passing through a narrow slit / small hole (diffraction) * for interference, point sources must be coherent.
