PRACTICE PAGE (3)

Name Date I J CONCEPTUALthSI‘ PRACTICE PAGE Chapter 19 Vibrations and Waves Vibration and Wave Fundamentals 1. A sine curve that represents a transverse wave is drawn below. With a ruler, measure the wavelength and amplitude of the wave. a. Wavelength = Tem b. Amplitude = _[.§ <M 2. A kid on a playground swing makes a complete to-and-fro swing e The frequency of swing is g /Qf\‘ 2 & 5 hertz]) [1 hertz] [2 hertz] 5 and the period is [0.5 seconds] [ second] [2 seconds] \ 3. Complete the statements. ach 2 seconds. A MARINE WEATHER STATION REPORTS WAVES ALONG THE SHORE THAT ARE 8 SECONDS APART. THE FREQUENCY OF THEI WAVES 1S THEREFORE THE PER}OOSOF é?) A40-HERTZ SOU WAVE 15 [/44C__ SECOND. 4. The annoying sound from a mosquito is produced when it beats its wings at the average rate of 600 wingbeats per second. a. What is the frequency of the sound waves? (Lo {2 b. What is the wavelength? (Assume the speed of sound is 340 m/s.) 15, 7 m 83

| CONCEPTUAL physi('r- TICE PAGH Chapter 19 Vibrations and Waves Vibration and Wave F undamentals—continued 5 Ate ball pitching machine goes haywire and pitches st H”"”“""""’ second The speed of the ball y an incredible 300 m/s l fistance in the alr between the flying balle? ( t Y "I’Jflh&-,(,t)‘; | 3 ¢i o) Lt w el “1 ue o Je(f What happens 1o the distance between the balls if the rate of piehing is sider & wave generator that produces 10 pulses per s 6eond. The speed of the wa Ves is a. What is the wavelength of the waves? _ ¢ (v b. What happens 1o the wavelength if the frequency of pulses is increase LY T v ‘g’ \el ! JUS1 w {1 e 9 §1unce Leyweer g :,:,Iyt:;:i,:‘:::\:’/,'rlzh‘ walches the waves, |f the portion of a wave betwesn tye Crests passes i s 5564 the a. what is the speed of the waves? . ' mlo b. what is the period of wave motion? I; ™ if the distance hat . : r‘suzwnr/. between crests in the above question were 1.5 meters apart, and two ¢ each second, o "“-—*' 1m ; 16818 pass the pole il “—/\\”\/;JF' I~ a. what would be the speed of the wave? |, 5w /¢ perod of wave motion? s b. what would be the 8. When an automobile me ves toward 2 3 LT oward a listener, the sound of ite horn seems relatively pitched| Chigh pitched]y (normaf) and when moving aws BN 3 away from the liste its horn seems . o Mo Jow pitched]y (high pitched) normal), 10. The changed piten of the Doppler effect 18 due o changes in s wave speed) (wave frequenc /’l/ {both), %4

[ ] CONCEPTUAL PhySlc PRACTICE PAGE Chapter 19 Vibrations and Waves Shock Waves—continued i rodul 3. Use a ruler to estimate the speeds of the aircraft that p below. ce the shock waves in the two sketches Yfmam Aircraft a'is traveling about |+ S times the speed of sound. Aircraft b is traveling about 3 times the speed of sound. 4. Draw your own circle (anywhere) and estimate the speed of the aircraft to produce the shock wave shown below: