Physics for Scientists and Engineers With Modern Physics
9th Edition
ISBN: 9781133953982
Author: SERWAY, Raymond A./
Publisher: Cengage Learning
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Chapter 17, Problem 52AP
(a)
To determine
The sound power output of the loud speaker.
(b)
To determine
The efficiency of the speaker.
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Chapter 17 Solutions
Physics for Scientists and Engineers With Modern Physics
Ch. 17.1 - If you blow across the top of an empty soft-drink...Ch. 17.3 - A vibrating guitar string makes very little sound...Ch. 17.3 - Increasing the intensity of a sound by a factor of...Ch. 17.4 - Consider detectors of water waves at three...Ch. 17.4 - You stand on a platform at a train station and...Ch. 17.4 - An airplane flying with a constant velocity moves...Ch. 17 - Prob. 1OQCh. 17 - Prob. 2OQCh. 17 - Prob. 3OQCh. 17 - What happens to a sound wave as it travels from...
Ch. 17 - Prob. 5OQCh. 17 - Prob. 6OQCh. 17 - Prob. 7OQCh. 17 - Prob. 8OQCh. 17 - Prob. 9OQCh. 17 - Prob. 10OQCh. 17 - Prob. 11OQCh. 17 - Prob. 12OQCh. 17 - Prob. 13OQCh. 17 - Prob. 14OQCh. 17 - Prob. 1CQCh. 17 - Prob. 2CQCh. 17 - Prob. 3CQCh. 17 - Prob. 4CQCh. 17 - Prob. 5CQCh. 17 - Prob. 6CQCh. 17 - Prob. 7CQCh. 17 - Prob. 8CQCh. 17 - Prob. 9CQCh. 17 - Prob. 1PCh. 17 - Prob. 2PCh. 17 - Write an expression that describes the pressure...Ch. 17 - Prob. 4PCh. 17 - Prob. 5PCh. 17 - Prob. 6PCh. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Prob. 10PCh. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - Prob. 13PCh. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Prob. 18PCh. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - The intensity of a sound wave at a fixed distance...Ch. 17 - Prob. 22PCh. 17 - Prob. 23PCh. 17 - Prob. 24PCh. 17 - The power output of a certain public-address...Ch. 17 - Prob. 26PCh. 17 - Prob. 27PCh. 17 - Prob. 28PCh. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - A fireworks rocket explodes at a height of 100 m...Ch. 17 - Prob. 35PCh. 17 - Prob. 36PCh. 17 - Prob. 37PCh. 17 - Prob. 38PCh. 17 - Prob. 39PCh. 17 - Prob. 40PCh. 17 - Prob. 41PCh. 17 - Prob. 42PCh. 17 - Prob. 43PCh. 17 - Prob. 44PCh. 17 - Prob. 45PCh. 17 - Prob. 46PCh. 17 - Prob. 47PCh. 17 - Prob. 48APCh. 17 - Prob. 49APCh. 17 - Prob. 50APCh. 17 - Prob. 51APCh. 17 - Prob. 52APCh. 17 - Prob. 53APCh. 17 - A train whistle (f = 400 Hz) sounds higher or...Ch. 17 - Prob. 55APCh. 17 - Prob. 56APCh. 17 - Prob. 57APCh. 17 - Prob. 58APCh. 17 - Prob. 59APCh. 17 - Prob. 60APCh. 17 - Prob. 61APCh. 17 - Prob. 62APCh. 17 - Prob. 63APCh. 17 - Prob. 64APCh. 17 - Prob. 65APCh. 17 - Prob. 66APCh. 17 - Prob. 67APCh. 17 - Prob. 68APCh. 17 - Prob. 69APCh. 17 - Prob. 70APCh. 17 - Prob. 71CPCh. 17 - Prob. 72CPCh. 17 - Prob. 73CP
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- What is the minimum power required for a loudspeaker to produce 109 dB sound at a distance of 10.9 m in any direction?arrow_forwardThe average intensity a distance d₁ = 1.6 m from an omni-directional light bulb is ₁ = 1.3 W/m². (a) Write a symbolic expression for the intensity a distance d₂ = 2.5 m from the same bulb, in terms of ₁, d₁ and d₂, and calculate its numeric value. d₁ I₂ 11 = 0.533 41.82 (b) Calculate the maximum output power of the light bulb. Pmax W/m² W (Don't worry about the font -- use 1₁ for 1.)arrow_forwardTwo 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. C A 4.00 mj В 3.00 m 2.00 m Quetíon : A) What the (m.) dis Fances of ACarrow_forward
- The power output of a certain public address speaker is 6.8 W. Suppose it broadcasts equally in all directions. At what distance (in em) from the speaker would the sound be barely audible (B-120 dB)? (Answer in 2 decibal places) DELLarrow_forwardA large solar panel on a spacecraft in Earth orbit produces 1.9 kW of power when the panel is turned toward the sun. What power would the solar cell produce if the spacecraft were in orbit around Saturn, 9.5 times as far from the sun?arrow_forwardA microphone delivers 36 mW to the 300 ohm input of an amplifier. The maximum power for a 16 ohm speaker system is 15 W. How many decibels does the amplifier gain?a)36.9 dBb)42.5 dBc)65.4 dBd)52.8 dBe) 75 dBarrow_forward
- You have a 91-W and a 73-W lightbulb that are identical in every other way. When you are at 10.3 m from the second bulb, you notice that both light bulbs produce the same intensity. How far are you, in meters, from the first lightbulb?arrow_forwardWhat frequency is received by a stationary mouse just before being dispatched by a hawk flying at it at 24.4 m/s and emitting a screech of frequency 3400 Hz? Assume room temperature air.arrow_forwardThe light intensity 4.4 m from a light bulb is 0.59 W/m^2. What is the power output of the bulb, assuming it radiates equally in all directions?arrow_forward
- (a) Describe the factors that cause the output of a communication channel to differ from its input and state the principal sources of noise? (b) How can the impact of these be reduced or eliminated?arrow_forwardAt a recent rock concert, a dB meter registered 118 dB when placed 1.60 m in front of a loudspeaker on the stage. (a) What was the power output of the speaker, assuming a hemispherical radiation of the sound and neglecting absorption in the air? Answer in W. (b) How far away would the intensity level be a somewhat reasonable 85 dB? Answer in m.arrow_forwardFind the range of wavelengths emitted by the bat in meters, by using that the speed of sound is c=343m/sec and the range of frequencies from 70 to 30KHz. The solution matches the range of sizes for an insect. What is the order of magnitude for this range? Take this order and call it L for the average size of an insect. b) If the bat produces a power of P = 10^-5 watts and its hearing threshold is 10^-12 watts/m^2 what is the maximum distance from which the bat can detect an echo?arrow_forward
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