Bookmarks Prof es m HWZ - Waves and Sound - Pt X Course Hero x l + C' i webassign.net/web/Student/Assignmem-Responses/last?dep=3'l256020 3 me CllS(anCe [I'Om crest (0 CFES( is [He A = AX = 4U.U cm : U.QUU I'l'l wavelength. Multiply the wavelength by the v : f1 : (8.00 Hz)(0.400 m) = 3.20 m/s frequency to get the speed. Take the reciprocal of the frequency to T : i : 1 : 0.125 5 get the period. f 8.00 HZ LEARN MORE REMARKS It's important not to confuse the wave with the medium 'it travels in. A wave is energy transmitted through a medium; some waves, such as light waves, don't require a medium. QUESTION Is the frequency of a wave affected by the waves amplitude? 0 Yes. Increasing amplitude increases frequency. 0 Yes. Increasing amplitude decreases frequency. O No. They are independent of each other. PRACTICE IT Use the worked example above to help you solve this problem. A wave traveling in the positive X-direction is pictured in Figure (3). Find the amplitude, wavelength, speed, and period of the wave if it has a frequency of 8.35 Hz. In Figure (a), Ax = 43.5 cm and Ay = 15.0 cm. A = l m A: lm EXERCISE HINTS: GETTINGSTARTED I I'MSTUCK! A wave traveling in the positive X-d'irection is pictured in Figure (b). Find the amplitude, wavelength, Speed, and period of the wave if it has a frequency of 13.5 HZ. In the gure, AX = 61.5 Cm and Ay = 25.0 cm. A: m A: m v= m/s T: 7 5 Need Help? mean 6. [l1 Points] SERCP11 14.6.P.025. MYNOTES H ASKYOURTEACHER H PRACTICEANOTHER A baseball hits a car, breaking its window and triggering its alarm which sounds at a frequency of 1130 Hz. What frequency (in Hz) is heard by a boy on a bicycle riding away from the car at 7.75 m/s? Take the speed of sound to be 343 m/s