Why is the loudness of the sound heard by a plucked wire increased when it is mounted on a sound board?
Q: dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of…
A: Given data : Depth of the ocean = 430 m Temperature of sea water = 25°C Speed of sound in…
Q: A reading of 94 dB is obtained on a sound meter placed near a drill. Calculate the intensity of the…
A: intensity in dB=20log10(I) where I is actual intensity for the given problem 94dB=20log10(I)…
Q: What is the sound level and intensity of a 120 W speaker located 10 m away? What if it were located…
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Q: An audio speaker producing a steady sound at an outdoor concert is 44 ft away from you. If you move…
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Q: True or False Sound wave energy can be transferred to matter, causing that matter to vibrate
A: True , sound wave energy can be transferred to matter ( mass not tranfer) ,due to which transfer of…
Q: consider a vibrating string that makes a sound wave shown above. what is the frequency of the…
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Q: A loudspeaker is placed near the open end of a pipe length 87 cm closed at its other end. Calculate…
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Q: A man is standing at a distance of 12m from a cliff. Will he be able to hear a clear echo of his…
A: The distance of a man from the cliff is given as d=12 m
Q: A loudspeaker on a pole broadcasts sound waves equally in all directions What is the speaker’s…
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Q: Some hearing aids can help the wearer pick out a single voice in a room full of people talking. This…
A: How does a hearing aid help the wearer pick out a single voice in a room full of people talking.
Q: How many octaves does normal human hearing span? How many octaves are on a common piano keyboard?
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Q: When a sound is reflected from a distant object, an echo is produced. Let the distance between the…
A: An echo is heard when time interval between the reflected sound and the original sound is at least…
Q: A hiker shouts toward a cliff which is 360m away and hears his echo 2 seconds later. What is the…
A: solution: Given that d = 360 m t =2 s wavelength = 0.6 Thi
Q: An outside loudspeaker emits sound waves with a power output of 100 W. Calculate the intensity level…
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Q: In a sound wave, a displacement node is a pressure antinode and vice versa, Why?
A: NodeNode is the point where amplitude of oscillation is minimum, i.e. displacement is minimum. We…
Q: If a woman needs an amplification of 7.0 × 104 times the threshold intensity to enable her to hear…
A: Given: A woman needs an amplification, (I) = 7×104 I0 Where I0 = reference intensity level (or…
Q: At what temperature will sound travel in hydrogen with the same speed as in oxygen at 927°C?
A: Solution:-Given thatHydrogenOxygen-TO2=927°C=927+273=1200 KMO2=32MH2=2
Q: Suppose a person has a 50-dB hearing loss at all frequencies. By how many factors of 10 will…
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Q: A pneumatic drill creates a decibel level of 116 dB at a distance of 10 m. Calculate the sound…
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Q: Relative to solids and liquids, how does air rank as a conductor of sound?
A: Sound waves require a material medium for their progression.
Q: In order for sound to be "heard" it must first vibrate the small bones in the inner ear against the…
A: Bony structure called Helicotrema
Q: The pain threshold of sound level is 120 db 160 db O 140 db
A: The pain threshold of sound level is at range between 120-140 dB. 120 dB is the sound of an airplane…
Q: An audio speaker producing a steady sound at an outdoor concert is 40 ft away from you. If you move…
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Q: at a distance of 4 m from a fan exerting 50W of mechanical energy, estimate the sound level if the…
A: distance (d) = 4 m Power of fan (P) = 50 W Io = 10-12 Wm2
Q: nd the magnitude and direction (relative to the given coordinate system) of the net electric
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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: What is the speed of sound in air at a temperature of 212°F?
A: Given that,Temperature : T = 212°FHere we need to find the speed of the sound at temperature T :As…
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 speed of sound in steel is 15 times greater than that in air. If the frequency of a wave in the…
A: Speed of sound in air = 343 m/s Speed of sound in steel = 15 * 343 = 5145 m/s Frequency of wave =…
Q: How far should you stand away from a sound source that generates and 85-W power to cause damage to…
A: Given Power of sound source is P=85 W Maximum hearing intensity of Ear is I= 1 W/m2
Q: reduce the of sound by 25%. How far bac must you sit in order to hear the
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Q: The sound of distant horses can be heard by applying the ear to the ground , whereas it is inaudible…
A: The sound of distant horses can be heard by applying the ear to the ground , whereas it is inaudible…
Q: The sound level measured in a room by a person watching a movie on a home theater system varies from…
A: Introduction: The loudness of the sound is measured in decibel, and it is directly proportional to…
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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