Two speakers emit sound waves of different frequencies as shown in the figure: Speaker A has a power of 1.00 mW and Speaker B has a power of 1.50 mW.
Q: Select the lowest and the highest frequencies from these that would be audible to a average human.…
A: 20Hz to 20000Hz
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Q: A piano tuner creates an 880.0 Hz tone. When he plucks a piano string, the two waves create a beat…
A: The frequency f1 = 880 Hz Beat = 5 Hz Let the second frequency be f2
Q: What is the speed of sound at a temperature of 300 K? O 330 m/s 340 m/s O 6030 m/s O 348 m/s
A: Speed of sound with temperature varies as v = 331 m/s + (0.6 m/s °C ) T Given temerature T = 300 K…
Q: In the figure below, what is the frequency of the ambulance siren as observed by the driver of the…
A: Given: The velocity of source, vs = 20 m/s velocity of observer, vo = 30 m/s frequency of source,…
Q: A sound source emits sounds of frequency 185 Hz that travel through still air at 340 m/s. This sound…
A:
Q: An underwater vehicle sends out a short sound. An echo of the sound is perceived 5.15 s after…
A: Total distance = 2 × distance between vehicle and reflecting surface, Because sound first have to…
Q: The eardrum, which transmits vibrations to the sensory organs of your ear, lies at the end of the…
A:
Q: The intensity of sound in a normal conversation is about 3×10^-6 watt/m2 and the frequency of normal…
A: Given: The intensity of sound is I=3×10-6 W/m2. The frequency is f=1100 Hz. The expression of…
Q: Two speakers are in phase, set up to play the same tone, and arranged as shown in the figure. Which…
A: A and B represents the loud speakers . The path difference between the sound from A and B at P is
Q: We now consider two sound waves with different frequencies which have to the same amplitude. The…
A: Let interference of y1 & y2 occour at point p
Q: A siren mounted on the roof of a firehouse emits sound at a frequency of 900HZ .a steady wind is…
A: Given : f = 900 Hz vw = 15 m/s vs = 343 m/s
Q: what frequency of sound traveling in air at 40 oc has a wavelength of 0.50 m a) 20 Hz b) 344.7 Hz…
A: Given data: Sound wave traveling in air Temperature (T) = 40 °C Wavelength (λ) = 0.50 m Required:…
Q: A car moving at 35 m/s approaches a stationary whistle that emits a 220 Hz sound. The speed of sound…
A: Given that:- f0=Observer frequency of sound=?fs=Actual frequency of sound waves =220 Hzv=Speed of…
Q: A point source emits sound waves with an average power output of 80.0 W. Find the intensity 3.00 O…
A: Option a is the right answer 0.707 W/m^2
Q: a pressure variation transmitted through matter as a longitudinal wave the change in frequency of…
A:
Q: As discussed in the chapter, many species of bats find flying insects by emitting pulses of…
A: Given As discussed in the chapter, many species of bats find flying insects by emitting pulses of…
Q: Two sound sources are located at x=0 and x=1m. Both sources emit sound waves at frequency 1kHz. The…
A: Given: One source is at x=0 Other source is at x=1m Frequency, f=1 kHz Sound of speed, v=344 m/s…
Q: Consider standing waves in a pipe of length L = 3.5 m containing a column of air. The speed of sound…
A:
Q: A sound wave has an intensity of 5.24×10−5Wm2. What is its intensity level?
A: Given that intensity of the sound wave then we have to determine the intensity level of the sound…
Q: Two speakers vibrate in phase with each other at 523 Hz. At certain points in the room, the sound…
A: Two speakers vibrate in phase with each other at 523 Hz. At certain points in the room, the sound…
Q: A particular sound wave has a frequency of 1460 Hz. How much time passes while one wave is made? O…
A: Time period is given by T=1f where f is the frequency. Here f= 1460 Hz Therefore time period will…
Q: If the intensity of the sound is doubled, what will the sound level be in decibels* O 3dB O-3dB O2dB…
A:
Q: A sonar echo returns to a submarine 1.92 s after being emitted. What is the distance to the object…
A: Given data: The echo returns after time (t) = 1.92 s Speed of sound (v) = 1500 m/s Required:…
Q: A whale makes a sound in the water with a frequency of 300 Hz sound moves at a speed of 1400 n/s in…
A:
Q: Two mechanical vibrators produce sound waves. Which pair of vibrators produce an audible 3 beats per…
A: solution is given as
Q: A human cannot hear sound at a frequency of 100 kHz or sound at 102 kHz. But if you walk into a room…
A:
Q: Two speakers emit sound waves of different frequencies as shown in the figure: Speaker A has a power…
A: power of speaker A = 1.00mW Power pf speaker B = 1.50 mW
Q: olphin is swimming at 10 metres per second towards a scuba diver. The dolphin is emitting a…
A: doppler effect will be used here
Q: Calculate the sound level (in dB) that is produced by earphones that create an intensity of 7.50 ✕…
A: The intensity of the sound is, I=7.5×10-2 W/m2 The threshold intensity of hearing is, I0=10-12 W/m2
Q: At an airport, a person is made to walk through the doorway of a metal detector, for security…
A: The principle behind the metal detector is Electromagnetic induction. The emf induced by the motion…
Q: A piano tuner uses a 512-Hz tuning fork to tune a piano. He strikes the fork and hits a key on the…
A: Beats are formed when two or more sound frequencies interfere constructively and destructively. The…
Q: In the figure below, what is the frequency of the ambulance siren as observed by the driver of the…
A: Doppler effect f' = f×[ (V-Vo) /(V+ Vs) ] Vs = speed of ambulance Vo = speed of car V= speed of…
Q: Which among the following statements about waves is INCORRECT? * Longitudinal and transverse waves…
A: Which among the following statement about wave is incorrect.
Q: The table shows the speed of sound in different media. Medla Speed of Sound (m/s) Alr at 40°C 355…
A: Given Speed in media air Va = 355 m/s Speed in glass ,Vg = 4540 m/s Let f be the frequency and…
Q: What is the minimum distance (in metres) required to hear an echo? A) 10 B) 13 C) 17 D) 21
A: As we know that the sound persistence into the mind of the person is up to 0.1 s therefore, the…
Q: Two speakers emit sound waves of different frequencies as shown in the figure: Speaker A has a power…
A: For speaker A: The power of the sound emitted by speaker A is PA= 1.00 mW=1.00×10-3 W The distance…
Q: When listening to tuning forks of frequency 255.99 kHz and 256 KHz, one hears the following number…
A: Ans. (a) 10 for given frequencies f1 and f2 the beat frequency is given byfb=f1-f2
Q: Two sound waves have the frequencies shown: sound A, 440 Hz • sound B, 520 Hz Which sound has the…
A: we know that, A higher frequency sound has a higher pitch, and a lower frequency sound has a lower…
Q: A speaker is producing 30 W of sound. At which of the following frequencies would it sound the…
A:
Q: Sounds from the street below come through an open window measuring 0.75 m by 0.88 m. If the power…
A: Power of sound (P) = 120 W dimensions of window = 0.75 m by 0.88 m
Q: A sound source emits sounds of frequency 180 Hz that travel through still air at 340 m/s. This sound…
A:
Q: An audio system is emitting a sound at a frequency of 676 Hz through two speakers separated by a…
A:
Q: An echocardiogram can measure the Doppler shift of the sound reflected from flowing blood. A sound…
A:
Q: what is the pressure amplitude of a sound wave with an intensity level of 120db in air
A: Given, sound wave intensity level=L= 120db sound wave intensity level is given by L=10log10II0 where…
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- To measure her speed, a skydiver carries a buzzer emitting a steady tone at 1 800 Hz. A friend on the ground at the landing site directly below listens to the amplified sound he receives. Assume the air is calm and the speed of sound is independent of altitude. While the skydiver is falling at terminal speed, her friend on the ground receives waves of frequency 2 150 Hz. (a) What is the skydivers speed of descent? (b) What If? Suppose the skydiver can hear the sound of the buzzer reflected from the ground. What frequency does she receive?(a) What is the speed of sound in a medium where a 100kHz frequency produces a 5.96cm wavelength? (b) Which substance in Table 17.1 is this likely to be?Two identical loudspeakers 10.0 m apart are driven by the same oscillator with a frequency of f = 21.5 Hz (Fig. P17.6) in an area where the speed of sound is 344 m/s. (a) Show that a receiver at point A records a minimum in sound intensity from the two speakers. (b) If the receiver is moved in the plane of the speakers, show that the path it should take so that the intensity remains at a minimum is along the hyperbola 9x2 16y2 = 144 (shown in red-brown in Fig. P17.6). (c) Can the receiver remain at a minimum and move very far away from the two sources? If so, determine the limiting form of the path it must take. If not, explain how far it can go. Figure P17.6
- As you travel down the highway in your car, an ambulance approaches you from the rear at a high speed (Fig. OQ17.3) sounding its siren at a frequency of 500 Hz. Which statement is correct? (a) You hear a frequency less than 500 Hz. (b) You hear a frequency equal to 500 Hz. (c) You hear a frequency greater than 500 Hz. (d) You hear a frequency greater than 500 Hz. whereas the ambulance driver hears a frequency lower than 500 Hz. (e) You hear a frequency less than 500 Hz. whereas (he ambulance driver hears a frequency of 500 Hz.In Figure OQ14.3, a sound wave of wavelength 0.8 m divides into two equal parts that recombine to interfere constructively, with the original difference between their path lengths being |r2 − r1| = 0.8 m. Rank the following situations according to the intensity of sound at the receiver from the highest to the lowest. Assume the tube walls absorb no sound energy. Give equal ranks to situations in which the intensity is equal. (a) From its original position, the sliding section is moved out by 0.1 m. (b) Next it slides out an additional 0.1 m. (c) It slides out still another 0.1 m. (d) It slides out 0.1 m more. Figure OQ14.3A barrel organ is shown in Figure P18.38. Such organs are much smaller than traditional organs, allowing them to fit in smaller spaces and even allowing them to be portable. Use the photo to estimate the range in fundamental frequencies produced by the organ pipes in such an instrument. Assume the pipes are open at both ends. How does that range compare to a piano whose strings range in fundamental frequency from 21.7 Hz to 4186.0 Hz? FIGURE P18.38
- (a) What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength? (b) Which substance in Table 17.1 is this likely to be?Two sinusoidal waves with identical wavelengths and amplitudes travel in opposite directions along a string producing a standing wave. The linear mass density of the string is =0.075 kg/m and the tension in the string is FT=5.00 N. The time interval between instances of total destructive interference is t=0.13 s. What is the wavelength of the waves?In figure OQ18.1 (page 566), a sound wave of wave-lenght 0.8 m divides into two equal parts that recombine to interfere constructively, with the original difference between their path lengths being |r2 r1| = 0.8 m. Rank the following situations according to the intensity of sound at the receiver from the highest to the lowest. Assume the tube walls absorb no sound energy. Give equal ranks to situations in which the intensity is equal. (a) From its original position, the sliding section is moved out by 0.1 m. (b) Next it slides out an additional 0.1 m. (c) It slides out still another 0.1 m. (d) It slides out 0.1 m more.
- Some studies suggest that the upper frequency limit of hearing is determined by the diameter of the eardrum. The wavelength of the sound wave and the diameter of the eardrum are approximately equal at this upper limit. If the relationship holds exactly, what is the diameter of the eardrum of a person capable of hearing 20 000 Hz? (Assume a body temperature of 37.0C.)The area of a typical eardrum is about 5.00 X 10-5 m2. (a) (Calculate the average sound power incident on an eardrum at the threshold of pain, which corresponds to an intensity of 1.00 W/m2. (b) How much energy is transferred to the eardrum exposed to this sound lor 1.00 mill?As you travel down the highway in your car, an ambulance approaches you from the rear at a high speed (Fig. OQ13.15) sounding its siren at a frequency of 500 Hz. Which statement is correct? (a) You hear a frequency less than 500 Hz. (b) You hear a frequency equal to 500 Hz. (c) You hear a frequency greater than 500 Hz. (d) You hear a frequency greater than 500 Hz, whereas the ambulance driver hears a frequency lower than 500 Hz. (e) You hear a frequency less than 500 Hz, whereas the ambulance driver hears a frequency of 500 Hz. Figure OQ13.15