EBK PHYSICS FOR SCIENTISTS AND ENGINEER
9th Edition
ISBN: 8220100461262
Author: SERWAY
Publisher: Cengage Learning US
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Chapter 17, Problem 17.4CQ
How can you determine that the speed of sound is the same for all frequencies by listening to a band orchestra?
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Chapter 17 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
Ch. 17 - If you blow across the top of an empty soft-drink...Ch. 17 - A vibrating guitar string makes very little sound...Ch. 17 - Increasing the intensity of a sound by a factor of...Ch. 17 - Consider detectors of water waves at three...Ch. 17 - You stand on a platform at a train station and...Ch. 17 - An airplane flying with a constant velocity moves...Ch. 17 - Table 17.1 shows the speed of sound is typically...Ch. 17 - Prob. 17.2OQCh. 17 - As you travel down the highway in your car, an...Ch. 17 - What happens to a sound wave as it travels from...
Ch. 17 - A church bell in a steeple rings once. At 300 m in...Ch. 17 - If a 1.00-kHz sound source moves at a speed of...Ch. 17 - Prob. 17.7OQCh. 17 - Assume a change at the source of sound reduces the...Ch. 17 - A point source broadcasts sound into a uniform...Ch. 17 - Suppose an observer and a source of sound are both...Ch. 17 - Prob. 17.11OQCh. 17 - With a sensitive sound-level meter, you measure...Ch. 17 - Doubling the power output from a sound source...Ch. 17 - Of the following sounds, which one is most likely...Ch. 17 - How can an object move with respect to an observer...Ch. 17 - Older auto-focus cameras sent out a pulse of sound...Ch. 17 - A friend sitting in her cat far down the toad...Ch. 17 - How can you determine that the speed of sound is...Ch. 17 - Prob. 17.5CQCh. 17 - You are driving toward a cliff and honk your horn....Ch. 17 - The radar systems used by police to detect...Ch. 17 - The Tunguska event. On June 30, 1908, a meteor...Ch. 17 - A sonic ranger is a device that determines the...Ch. 17 - A sinusoidal sound wave moves through a medium and...Ch. 17 - As a certain sound wave travels through the air,...Ch. 17 - Write an expression that describes the pressure...Ch. 17 - An experimenter wishes to generate in air a sound...Ch. 17 - Calculate the pressure amplitude of a 2.00-kHz...Ch. 17 - Earthquakes at fault lines in the Earths crust...Ch. 17 - A dolphin (Fig. P17.7) in seawater at a...Ch. 17 - A sound wave propagates in air at 27C with...Ch. 17 - Ultrasound is used in medicine both for diagnostic...Ch. 17 - A sound wave in air has a pressure amplitude equal...Ch. 17 - Prob. 17.11PCh. 17 - A rescue plane flies horizontally at a constant...Ch. 17 - A flowerpot is knocked off a window ledge from a...Ch. 17 - In the arrangement shown in Figure P17.14. an...Ch. 17 - The speed of sound in air (in meters per second)...Ch. 17 - A sound wave moves down a cylinder as in Figure...Ch. 17 - A hammer strikes one end of a thick iron rail of...Ch. 17 - A cowboy stands on horizontal ground between two...Ch. 17 - Calculate the sound level (in decibels) of a sound...Ch. 17 - The area of a typical eardrum is about 5.00 X 10-5...Ch. 17 - The intensity of a sound wave at a fixed distance...Ch. 17 - The intensity of a sound wave at a fixed distance...Ch. 17 - Prob. 17.23PCh. 17 - The sound intensity at a distance of 16 in from a...Ch. 17 - The power output of a certain public-address...Ch. 17 - A sound wave from a police siren has an intensity...Ch. 17 - A train sounds its horn as it approaches an...Ch. 17 - As the people sing in church, the sound level...Ch. 17 - The most soaring vocal melody is in Johann...Ch. 17 - Show that the difference between decibel levels 1...Ch. 17 - A family ice show is held at an enclosed arena....Ch. 17 - Two small speakers emit sound waves of' different...Ch. 17 - A firework charge is detonated many meters above...Ch. 17 - A fireworks rocket explodes at a height of 100 m...Ch. 17 - Prob. 17.35PCh. 17 - Why is the following situation impossible? It is...Ch. 17 - An ambulance moving at 42 m/s sounds its siren...Ch. 17 - Prob. 17.38PCh. 17 - A driver travels northbound on a highway at a...Ch. 17 - Submarine A travels horizontally at 11.0 m/s...Ch. 17 - Review. A block with a speaker bolted to it is...Ch. 17 - Review. A block with a speaker bolted to it is...Ch. 17 - Expectant parents are thrilled to hear their...Ch. 17 - Why is the following situation impossible? At the...Ch. 17 - Prob. 17.45PCh. 17 - Prob. 17.46PCh. 17 - A supersonic jet traveling at Mach 3.00 at an...Ch. 17 - Prob. 17.48APCh. 17 - Some studies suggest that the upper frequency...Ch. 17 - Prob. 17.50APCh. 17 - Prob. 17.51APCh. 17 - Prob. 17.52APCh. 17 - Prob. 17.53APCh. 17 - A train whistle (f = 400 Hz) sounds higher or...Ch. 17 - An ultrasonic tape measure uses frequencies above...Ch. 17 - The tensile stress in a thick copper bar is 99.5%...Ch. 17 - Review. A 150-g glider moves at v1 = 2.30 m/s on...Ch. 17 - Consider the following wave function in SI units:...Ch. 17 - Prob. 17.59APCh. 17 - Prob. 17.60APCh. 17 - To measure her speed, a skydiver carries a buzzer...Ch. 17 - Prob. 17.62APCh. 17 - Prob. 17.63APCh. 17 - Prob. 17.64APCh. 17 - A police car is traveling east at 40.0 m/s along a...Ch. 17 - The speed of a one-dimensional compressional wave...Ch. 17 - Prob. 17.67APCh. 17 - Three metal rods are located relative to each...Ch. 17 - Prob. 17.69APCh. 17 - A siren mounted 011 the roof of a firehouse emits...Ch. 17 - Prob. 17.71CPCh. 17 - In Section 16.7, we derived the speed of sound in...Ch. 17 - Equation 16.40 states that at distance r away from...
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- A sound wave in air has a pressure amplitude equal to 4.00 103 Pa. Calculate the displacement amplitude of the wave at a frequency of 10.0 kHz.arrow_forwardTwo 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?arrow_forwardThe 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?arrow_forward
- 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.arrow_forwardA speaker is placed at the opening of a long horizontal tube. The speaker oscillates at a frequency of f, creating a sound wave that moves down the tube. The wave moves through the tube at a speed of v=340.00 m/s. The sound wave is modeled with the wave function s(x,t)=smaxcos(kxt+) . At time t=0.00 s , an air molecule at x=2.3 m is at the maximum displacement of 6.34 nm. At the same time, another molecule at x=2.7 m has a displacement of 2.30 nm. What is the wave function of the sound wave, that is, find the wave number, angular frequency, and the initial phase shift?arrow_forwardCalculate the first overtone in an ear canal, which resonates like a 2.40cmlong tube closed at one end, by taking air temperature to be 37.0°C. Is the ear particularly sensitive to such a frequency? (The resonances at the ear canal are complicated by its nonuniform shape, which we shall ignore.)arrow_forward
- A speaker is placed at the opening of a long horizontal tube. The speaker oscillates at a frequency f, creating a sound wave that moves down the tube. The wave moves through the tube at a speed of v=340.00 m/s. The sound wave is modeled with the wave function s(x,t)=smaxcos(kxt+) . At time t=0.00 s , an air molecule at x=3.5 m is at the maximum displacement of 7.00 nm. At the same time, another molecule at x=3.7 m has a displacement of 3.00 nm. What is the frequency at which the speaker is oscillating?arrow_forwardA wave on a string is driven by a string vibrator, which oscillates at a frequency of 100.00 Hz and an amplitude of 1.00 cm. The string vibrator operates at a voltage of 12.00 V and a current of 0.20 A. The power consumed by the string vibrator is P=IV . Assume that the string vibrator is 90% efficient at converting electrical energy into the energy associated with the vibrations of the string. The string is 3.00 m long, and is under a tension of 60.00 N. What is the linear mass density of the string?arrow_forwardA dolphin (Fig. P17.7) in seawater at a temperature of 25C emits a sound wave directed toward the ocean floor 150 m below. How much time passes before it hears an echo?arrow_forward
- A string is fixed at both end. The mass of the string is 0.0090 kg and the length is 3.00 m. The string is under a tension of 200.00 N. The string is driven by a variable frequency source to produce standing waves on the string. Find the wavelengths and frequency of the first four modes of standing waves.arrow_forwardAn ambulance with a siren (f=1.00kHz) blaring is approaching an accident scene. The ambulance is moving at 70.00 mph. A nurse is approaching the scene from the opposite direction, running at vo=7.00 m/s. What frequency does the nurse observe? Assume the speed of sound is v=343.00 m/s.arrow_forwardA string with a linear mass density of =0.0062 kg/m is stretched between two posts 1.30 m apart. The tension in the string is 150.00 N. The string oscillates and produces a sound wave. A 1024-Hz tuning fork is struck and the beat frequency between the two sources is 52.83 Hz. What are the possible frequency and wavelength of the wave on the string?arrow_forward
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