(a) Explanation Given info: The power of the output is 150 W , the sound level is 103 dB and the distance is 1.60 m . The expression for the sound level is, β = 10 log ( I I 0 ) Here, I is the intensity of the sound. I 0 is the reference intensity. Substitute 1.00 × 10 − 12 W / m 2 for I o and 103 dB for β in above expression. 103 dB = 10 log ( I 1.00 × 10 − 12 W / m 2 ) I = 0.01995 W / m 2 Thus, the intensity of the sound is 0 (b) To determine The efficiency of the speaker.

Physics for Scientists and Engineers (AP Edition)

9th Edition

ISBN: 9781133953951

Author: Raymond A. Serway, John W. Jewett

Publisher: Cengage Learning

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Chapter 17, Problem 17.52AP

(a)

To determine

The sound power output.

(b)

To determine

The efficiency of the speaker.

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Chapter 17, Problem 17.51AP

Chapter 17, Problem 17.53AP

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Chapter 17 Solutions

Physics for Scientists and Engineers (AP Edition)

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. 17.2OQ Ch. 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. 17.7OQ Ch. 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. 17.11OQ Ch. 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. 17.5CQ Ch. 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. 17.11P Ch. 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. 17.23P Ch. 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. 17.35P Ch. 17 - Why is the following situation impossible? It is...Ch. 17 - An ambulance moving at 42 m/s sounds its siren...Ch. 17 - Prob. 17.38P Ch. 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. 17.45P Ch. 17 - Prob. 17.46P Ch. 17 - A supersonic jet traveling at Mach 3.00 at an...Ch. 17 - Prob. 17.48AP Ch. 17 - Some studies suggest that the upper frequency...Ch. 17 - Prob. 17.50AP Ch. 17 - Prob. 17.51AP Ch. 17 - Prob. 17.52AP Ch. 17 - Prob. 17.53AP Ch. 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. 17.59AP Ch. 17 - Prob. 17.60AP Ch. 17 - To measure her speed, a skydiver carries a buzzer...Ch. 17 - Prob. 17.62AP Ch. 17 - Prob. 17.63AP Ch. 17 - Prob. 17.64AP Ch. 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. 17.67AP Ch. 17 - Three metal rods are located relative to each...Ch. 17 - Prob. 17.69AP Ch. 17 - A siren mounted 011 the roof of a firehouse emits...Ch. 17 - Prob. 17.71CP Ch. 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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The sound power output.

Solution Summary: The author explains the sound power output, which is 0.6418w. The expression for the level is, beta =10mathrmlogleft

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The sound power output.

The efficiency of the speaker.

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Chapter 17 Solutions