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Unformatted text preview: ncyofthestringistunedto400 Hz.Whichofthefollowingcouldbethedisplacementofthestringfromy=0asa functionofxandtime? A. 0.003sin(5πx ­‑800πt) B. 0.004sin(3.33πx ­‑800πt) C. 0.002sin(5πx)cos(2400πt)c 3/18/2013 Physics 1C Winter 2013: Final 2 D. 0.005sin(3.33πx)cos(800πt) E. Noneoftheabove 6. Astudentholdsatuningforkoscillatingat300Hz.Hewalksawayfromawall ataconstantspeedof3.00m/s.Whatbeatfrequencydoesheobservebetween thetuningforkanditsecho?(speedofsound=345m/s) A. 5.17Hzc B. 1.75Hz C. 3.50Hz D. 5.26Hz E. Noneoftheabove. 7. Twospeakersare2mapartandaredriveninphasewiththesame400Hzinput signal.Atwhatdistancesfromthecenterpointbetweenthetwospeakerswill therebeanull?(...
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