Explanation Given Info: The sound level when placed in open is 115 dB. The intensity of sound at reference level is, I 0 = 1.0 × 10 − 12 W/m 2 The distance of sound level from loudspeaker is 8.25 m. Formula Used: The expression of the sound level in decibels is given as follows: β = ( 10 dB ) log 10 ( I I 0 ) …… (1) Here, Iis the intensity of sound and I 0 is the reference intensity. The power in terms of intensity and area is given as follows: P = I A …… (2) Here, Iis the intensity and A is the area. Calculation: Substitute 115 dB for β and 1.0 × 10 − 12 W/m 2 for I 0 in equation (1). 115 dB = ( 10 dB ) log 10 ( I 1...

7th Edition

ISBN: 9780321625922

Author: Douglas C. Giancoli

Publisher: Addison-Wesley

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Question

Chapter 12, Problem 74GP

To determine

The acoustic power of the speaker.

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Chapter 12, Problem 73GP

Chapter 12, Problem 75GP

Chapter 12 Solutions

Physics: Principles with Applications

Ch. 12 - Prob. 1OQ Ch. 12 - Prob. 1Q Ch. 12 - Prob. 2Q Ch. 12 - Prob. 3Q Ch. 12 - When a sound wave passes from air into water, do...Ch. 12 - What evidence can you give that the speed of sound...Ch. 12 - Prob. 6Q Ch. 12 - How will the air temperature in a room affect the...Ch. 12 - Prob. 8Q Ch. 12 - Prob. 9Q

Ch. 12 - 10.A noisy truck approaches you from behind a...Ch. 12 - Prob. 11Q Ch. 12 - Prob. 12Q Ch. 12 - Traditional methods of protecting the hearing of...Ch. 12 - 14- Consider the two waves shown in Fig....Ch. 12 - Is there a Doppler shift if the source and...Ch. 12 - Prob. 16Q Ch. 12 - Prob. 17Q Ch. 12 - Prob. 1MCQ Ch. 12 - Prob. 2MCQ Ch. 12 - Prob. 3MCQ Ch. 12 - Prob. 4MCQ Ch. 12 - Prob. 5MCQ Ch. 12 - Prob. 6MCQ Ch. 12 - Prob. 7MCQ Ch. 12 - Prob. 8MCQ Ch. 12 - Prob. 9MCQ Ch. 12 - Prob. 10MCQ Ch. 12 - Prob. 11MCQ Ch. 12 - Prob. 12MCQ Ch. 12 - Prob. 13MCQ Ch. 12 - Prob. 1P Ch. 12 - Prob. 2P Ch. 12 - (a) Calculate the wavelengths in air at 20°C for...Ch. 12 - Prob. 4P Ch. 12 - An ocean fishing boat is drifting just above a...Ch. 12 - Prob. 6P Ch. 12 - Prob. 7P Ch. 12 - What is the intensity of a sound at the pain level...Ch. 12 - What is the sound level of a sound whose intensity...Ch. 12 - Prob. 10P Ch. 12 - Prob. 11P Ch. 12 - Prob. 12P Ch. 12 - One CD player is said to have a signal-to-noise...Ch. 12 - Prob. 14P Ch. 12 - At a rock concert, a dB meter registered 130 dB...Ch. 12 - Prob. 16P Ch. 12 - If the amplitude of a sound wave is made 3.5 times...Ch. 12 - Prob. 18P Ch. 12 - Prob. 19P Ch. 12 - Prob. 20P Ch. 12 - Prob. 21P Ch. 12 - Prob. 22P Ch. 12 - Prob. 23P Ch. 12 - Prob. 24P Ch. 12 - Prob. 25P Ch. 12 - Prob. 26P Ch. 12 - The A string on a violin has a fundamental...Ch. 12 - Prob. 28P Ch. 12 - (a) What resonant frequency would you expect from...Ch. 12 - If you were to build a pipe organ with open-tube...Ch. 12 - A tight guitar string has a frequency of 540 Hz as...Ch. 12 - Prob. 32P Ch. 12 - 33. (II) An unfingered guitar string is 0.68 m...Ch. 12 - Prob. 34P Ch. 12 - 35. (II) An organ is in tune at 22.0°C. By what...Ch. 12 - How far from the mouthpiece of the flute in...Ch. 12 - (a) At T= 22°C. how long must an open organ pipe...Ch. 12 - A particular organpipe can resonate at 264 Hz, 440...Ch. 12 - Prob. 39P Ch. 12 - Prob. 40P Ch. 12 - Prob. 41P Ch. 12 - Prob. 42P Ch. 12 - Prob. 43P Ch. 12 - The human ear canal is approximately 2.5 cm long....Ch. 12 - Prob. 45P Ch. 12 - Prob. 46P Ch. 12 - A certain dog whistle operates at 23.5 kHz. while...Ch. 12 - Prob. 48P Ch. 12 - A guitar string produces 3 beats/s when sounded...Ch. 12 - Prob. 50P Ch. 12 - Prob. 51P Ch. 12 - Prob. 52P Ch. 12 - Prob. 53P Ch. 12 - Prob. 54P Ch. 12 - Prob. 55P Ch. 12 - Prob. 56P Ch. 12 - Prob. 57P Ch. 12 - Prob. 58P Ch. 12 - As a bat flies toward a wall at a speed of 6.0...Ch. 12 - Prob. 60P Ch. 12 - Prob. 61P Ch. 12 - Prob. 62P Ch. 12 - Prob. 63P Ch. 12 - Prob. 64P Ch. 12 - Prob. 65P Ch. 12 - Prob. 66P Ch. 12 - Prob. 67P Ch. 12 - Prob. 68P Ch. 12 - Prob. 69P Ch. 12 - Prob. 70P Ch. 12 - Prob. 71GP Ch. 12 - Prob. 72GP Ch. 12 - Prob. 73GP Ch. 12 - Prob. 74GP Ch. 12 - Prob. 75GP Ch. 12 - Prob. 76GP Ch. 12 - Prob. 77GP Ch. 12 - Prob. 78GP Ch. 12 - Prob. 79GP Ch. 12 - Prob. 80GP Ch. 12 - Prob. 81GP Ch. 12 - Prob. 82GP Ch. 12 - Prob. 83GP Ch. 12 - Prob. 84GP Ch. 12 - Prob. 85GP Ch. 12 - Prob. 86GP Ch. 12 - Prob. 87GP Ch. 12 - A bat flies toward a moth at speed 7.8 m/s while...Ch. 12 - Prob. 89GP Ch. 12 - Two loudspeakers face each other at opposite ends...Ch. 12 - A sound-insulating door reduces the sound level by...Ch. 12 - Prob. 92GP Ch. 12 - Prob. 93GP Ch. 12 - Prob. 94GP Ch. 12 - Prob. 95GP Ch. 12 - Prob. 96GP

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