Measured independently at the position of a receiver, two speakers are measured to have sound levels of 61.4 dB and 63.8 dB, respectively. When both speakers emit sound simultaneously, what sound level is detected?
Q: A typical sound level for a buzzing mosquito is 35 dB, and that of a vacuum cleaner is approximately…
A: Given, sound level for a buzzing mosquito=35dB sound level for vacuum cleaner=65dB
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Q: How far must one stand from a 4 mW point sound source if the intensity at that location is at the…
A: Given, Power = 4mW
Q: You are standing 4 m away from a speaker and experience a sound level that is 90 dB. What is the…
A: distance (d) = 4 m sound level = 90 dB
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A: Given Distance r1=32.2 m β1=77.1 dB r2=32.2-14.1=18.1 m
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Q: When a person wears a hearing aid, the sound intensity level increases by 24.4 dB. By what factor…
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Q: What is the decibel rating of a sound that has an intensity of 3.4 x 108 Wicm2? O 85 dB O 68 dB O 91…
A: Given:- What is the decibel rating of a sound that has an intensity of 3.4 x 10-8 W/cm2? Find :-…
Q: A source of sound has an intensity I1 and when its sound level is measured at a fixed distance the…
A: The initial sound intensity of the source is The final sound intensity of the source is The…
Q: The source of a sound wave has a power of 9 μW. If it is a point source, what is the sound intensity…
A: Given thatpower=9μw=9×10-6wdistance (r)=35msound intensity…
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A: Given: A woman needs an amplification, (I) = 7×104 I0 Where I0 = reference intensity level (or…
Q: A sound has a certain intensity I1. It suddenly increases to I2 so that I2 = 250I1. What is the…
A: We can calculate sound level β of the sound of intensity I from its definition. β (dB)=10log10II0
Q: You are overhearing a very heated conversation that registers 80 dB. You walk some distance away so…
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Q: A new jackhammer has a 1/100 reduction in sound intensity level from that of the older model, which…
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Q: Two sound waves with frequency 2752 Hz are emitted by two speakers which are 16.0 and 17.0 m away…
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Q: A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the…
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Q: A person perceives a sound that was produced 4 meters from them. How much less intense would the…
A: Intensity of a sound is inversely proportional to the square of the distance from the source.…
Q: A sound level of 0 dB corresponds to a sound intensity of 0 W/m2. True or False?
A: Sound waves are longitudinal waves. This implies that the direction of propagation of the sound wave…
Q: sound level measured in a room by a person watching a movie on a home theater system varies from…
A: Loudness of sound increase 10 times in increase of 10dB.
Q: The sound intensity level of two speakers are 71.4 dB and 79.2 dB, respectively. Find the ratio of…
A: sound intensity is defined as the power carried by the sound waves per unit cross-sectional area.…
Q: Ten oboes produce a sound intensity level of 50 dB in a concert hall. The number of oboes needed to…
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Q: The sound level 23.8 m from a loudspeaker is 66.7 dB. What is the rate at which sound energy is…
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Q: A person standing a certain distance from eighteen identical loudspeakers is hearing a sound level…
A: Given 18 Identical loudspeakers with sound level intensity of 117 dB To find out Sound level…
Q: The sound intensity level 3.6-m from a power saw is 101 dB. At what distance will the sound be a…
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Q: What is the speed of sound in (m/s) in a medium where a 156 KHZ frequency produces a 3.282 cm…
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Q: A student in the front row at a Grateful Dead concert is 8 meters away from the speaker. He hears…
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- The sound level at a distance of 3.0 m from a source is 120 dB. a) At what distance will the soundlevel be 100 dB? b) At what distance will the sound level be 10 dB?A round speaker emits sound waves uniformly in all direction. At a distance of 40.0m from the speaker, the sound intensity is 35 dB. What is the sound intensity level in a distance of 10.0m.The relative intensity of the first harmonic of a sound is 70 dB (1000 Hz). The second harmonic of a sound has the amplitude of a pressure 5 times smaller than that for the first harmonic. What is loudness for the second harmonic if we hear this sound separately?
- Two sound waves arrive to an observer, the first is loud at 2 W/m ^2 and the second one is quieter at 100 mW/m^2 ; how many dB louder is the first one compared to the second one?The sound level measured in a room by a person watching a movie on a home theater system varies from 50 dB during a quiet part to 90 dB during a loud part. Approximately how many times louder is the latter sound?A sound wave radiates from a speaker in all directions. If the power of the sound source is 250 W, calculate the intensity level in dB of the sound wave 0.4 km from the speaker. Hint: Presume that the sound waves spread as a sphere (not a hemisphere).
- A 60 year old person has a threshold of hearing at f=10 kHz of 79.0 dB. In contrast, a typical young adult's threshold at 10 kHz is only =43.0 dB. If the young adult can just barely hear a 10 kHz tone, by what factor must the intensity of the sound wave be amplified so that it is heard by the older person?The sound level measured in a room by a person watching a movie on a home theater system varies from 45 dB during a quiet part to 65 dB during a loud part. Approximately how many times louder is the latter sound?