14. Consider the two waves shown in Fig. 12–31. Each wave canbe thought of as a superposition of two sound waves withslightly different frequencies, as in Fig. 12–18. In which ofthe waves, (a) or (b), are the two component frequenciesfarther apart? Explain.1t (s)0.050.10.150.2-21t (s)0.050.10.15-2(b)FIGURE 12-31 Question 14.2.2.

The beat frequency is the frequency difference between two component frequencies. Higher the beat…

Answered: 14. Consider the two waves shown in…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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3)(A)One end of a 50-cm wire of 2.05 g is welded to a 40-cm wire of 5.03 g. (a) If a wave moves along the first wire at a speed of 700 m/s, find its speed along the second wire. (b) If the wavelength on the first wire is 2.06 cm, find the wavelength of the wave on the second wire.
[B] Earthquakes generate two sorts of waves in rock, shear or 5 waves which travel at about 4.5 km/s and pressure or P waves traveling at about 8 km/s. (1) After one such quake, a seismograph station picks up the S wave 3.0 minutes after the P wave. How far away was the source, or epicenter, of the earthquake? | (2) When a quake is detected, a steady 250 Hz alarm sounds in the hallway of a facility to alert the person on watch. The alarm is also sent to the cell phones of the staff on duty which emit the same 250 Hz tone. One of the staff responding to the alert runs down the hall, approaching the hallway speaker. She notices a 2 Hz variation in the loudness of the 250 Hz tone as she runs with her phone. What frequency is she hearing from the speaker? From your answer, how fast was she running, if the speed of sound is 344 m/s? A wave traveling through granite comes to a boundary with sandstone. The effective bulk modulus and density for each of these rocks is given in the table below.…
11) The figure below shows the maximum displacement for a standing wave pattern. The earliest time between the two flashes (the solid and the dotted lines) is 0.025 s. The wave function describing the standing wave pattern shown is: t = 0 4 mm 1= 0.025 s 0.5 m (a) y(x, t) = 2mm sin(2nx)cos(20nt) (b) y(x, t) = (c) y(x, t) = 2mm sin(4nx)cos(20nt) (d) y(x, t) = 2mm sin(2nx)cos(40nt) %3D 4mm sin(2nx)cos(20nt) %3D %3D arliest time
14) A standing wave pattern of frequency 160 Hz is established on a 1.5 m long string fixed at both ends. If the speed of waves on the string is 24 m/s, then the number of nodes is: (а) 20 (b)10 (с) 21 (d)11
4.(a) A French submarine and an American submarine move towards each other during maneuvers in motionless water in the Northern Atlantic. The French sub moves at speed of 55 km/h and the US sub at 75 km/h. The French sub sends out a sonar signal(sound wave in water) at 1,56 x 103 Hz. Sonar waves travel at 5470 km/h. i) What is the signal’s frequency as detected by the US sub? ii) What frequency is detected by the French sub in the signal reflected back to it by the US sub? (b) Compare red shift with blue shift.
(Bulk modulus) B = 2.18 x 10° N/m? density of water p = 1.00 × 10³ kg/m³ (reference intensity) ann (threshold of hearing) Q s peed of sound in air v = 343 m/s Io = 10-12 w/m² 22.0 m The driver boat whistle ling Shovid near The sound OT The above the lead surface divectly with the driver in the time Same friend the grond that from the ship 22, o m and he hear d a On away the boat whistling at the sane time as in the picture the boat whistle is above from the surface of the water. The teme perature 1.2 of the lead is 20°c Que tions : Consider the jour hey of sound in the air from the doll the boat to the water have dis tance 1. 2 m. Comas which take 0.00 25 second then the sound contin ues to travel in the water. Find time when the sound trave ls in the war fer down to the driver.
ii) The resultant intensity due to the destructive interference of two waves is 9 W/m2. Evaluate the amplitude of each wave if the ratio of their amplitudes is 3/2.
4) A wave traveling along a very long string (not a standing wave) has the function y(x,t) = (3.2mm) sin [(69.8 rad/m) x + (13690 rad/s) t + 2.19rad]. Find the velocity of the wave.
A progressive wave y (x, t) = 0.2 sin (30t – 4.0 x) where x is in in cm and t is in s. Calculate: (a) its maximum velocity and (b) its maximum acceleration. 1. - [ Umax +6 ст s"1; атах 3 — 180 ст s-2]
4) The resultant intensity due to the constructive interference of two waves is 49 W/m. Evaluate the amplitude of each wave if the ratio of their amplitudes is 5/2
26

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