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Loud Bird Review A loud bird is chirping at the top of a tall tree. The...
Subwoofer Speaker Review A subwoofer is a type of speaker designed to emit low-frequency sound waves....
Subwoofer Speaker Review A subwoofer is a type of speaker designed to emit low-frequency sound waves. Suppose a subwoofer is attached to a vertical pole. Of all the energy this subwoofer generates, 75 % of it is emitted forward in front of the suboofer, and 25 % is emitted backwards behind the subwoofer. Suppose a student takes a sound sensor and stands 1.0 m in front of the subwooferand 2.5 m below it. He measures a sound intensity level of...
n Review Id During takeoff, the sound intensity level of a jet engine is 150 dB...
n Review Id During takeoff, the sound intensity level of a jet engine is 150 dB at a distance of 22 m. Part A What is the sound intensity level at a distance of 1.0 km? Express your answer to two significant figures and include the appropriate units. НА ? B = 253.7 dB Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining
Question: Cicadas are loud flying insects that emerge en masse. Imagine you measure the sound level...
Question: Cicadas are loud flying insects that emerge en masse. Imagine you measure the sound level of a single male cicada to be 88.4 dB when your sound meter is 0.617 m from it. Only male cicadas make such loud noises. It is actually possible for cicadas to damage your hearing, you can learn more about how they make noise here. Part 1) What is the intensity of the sound produced by the cicada? I= W/m2 Part 2) Exactly 69...
CH 16 Traveling Waves Problem 16.40 Review Part A The sound intensity level 5.0 m from...
CH 16 Traveling Waves Problem 16.40 Review Part A The sound intensity level 5.0 m from a large power saw is 100 dB At what distance will the sound be a more tolerable 80 dB? Express your answer to two significant figures and include the appropriate units. RValue Units Submit Request Answer Provide Feedback
At a rock concert, a dB meter registered 135 dB when placed 2.3 m in front...
At a rock concert, a dB meter registered 135 dB when placed 2.3 m in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m² Part A What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. HA ? P= Value Units Submit...
1 Review Constants Periodic Table 30 seconds of exposure to 115 dB sound can damage your...
1 Review Constants Periodic Table 30 seconds of exposure to 115 dB sound can damage your hearing, but a much quieter 94 dB may begin to cause damage after 1 hour of continuous exposure. Part A You are going to an outdoor concert, and you'll be standing near a speaker that emits 43 W of acoustic power as a spherical wave. What minimum distance should you be from the speaker to keep the sound intensity level below 94 dB? Express...
What was the power output of the speaker, assuming uniform spherical spreading of the sound and...
What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. Constants At a rock concert, a dB meter registered 125 dB when placed 2.9 Im in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m? 勺 ? ' P-1 Value Units Submit...
Course Home <Ch 16 HW Problem 16.56 Part A The sound from a trumpet radiates uniformly...
Course Home <Ch 16 HW Problem 16.56 Part A The sound from a trumpet radiates uniformly in all directions in air with a temperature of 20°C Al a distance of 4.92 m from the trumpet the sound intensity level is 470 dB. The frequency is 589 Hz Use 344 m/s for the speed of sound in air, 1.20 kg/m for the density of air, and 1.00x10-12 W/m for the reference intensity What is the pressure amplitude at this distance? Express...
Express your answer as an integer Review Constants l Periodic Table View Available Hint(s) Learning Goal...
Express your answer as an integer Review Constants l Periodic Table View Available Hint(s) Learning Goal To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area on which they are incident Intensity is measured in watts per square meter, or W/m log(1,000,000)- The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear...
30 seconds of exposure to 115 dB sound can damage your hearing, but a much quieter...
30 seconds of exposure to 115 dB sound can damage your hearing, but a much quieter 94 dE may begin to cause damage after 1 hour of continuous exposure. Part A You are going to an outdoor concert, and you'l be standing near a speaker that emits 56 W of acoustic power as a spherical wave. What minimum distance should you be from the speaker to keep the sound intensity level below 94 dB? Express your answer to two significant...
Subwoofer Speaker Review A subwoofer is a type of speaker designed to emit low-frequency sound waves. Suppose a subwoofer is attached to a vertical pole. Of all the energy this subwoofer generates, 75 % of it is emitted forward in front of the suboofer, and 25 % is emitted backwards behind the subwoofer. Suppose a student takes a sound sensor and stands 1.0 m in front of the subwooferand 2.5 m below it. He measures a sound intensity level of...
n Review Id During takeoff, the sound intensity level of a jet engine is 150 dB at a distance of 22 m. Part A What is the sound intensity level at a distance of 1.0 km? Express your answer to two significant figures and include the appropriate units. НА ? B = 253.7 dB Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining
Question: Cicadas are loud flying insects that emerge en masse. Imagine you measure the sound level of a single male cicada to be 88.4 dB when your sound meter is 0.617 m from it. Only male cicadas make such loud noises. It is actually possible for cicadas to damage your hearing, you can learn more about how they make noise here. Part 1) What is the intensity of the sound produced by the cicada? I= W/m2 Part 2) Exactly 69...
CH 16 Traveling Waves Problem 16.40 Review Part A The sound intensity level 5.0 m from a large power saw is 100 dB At what distance will the sound be a more tolerable 80 dB? Express your answer to two significant figures and include the appropriate units. RValue Units Submit Request Answer Provide Feedback
At a rock concert, a dB meter registered 135 dB when placed 2.3 m in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m² Part A What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. HA ? P= Value Units Submit...
1 Review Constants Periodic Table 30 seconds of exposure to 115 dB sound can damage your hearing, but a much quieter 94 dB may begin to cause damage after 1 hour of continuous exposure. Part A You are going to an outdoor concert, and you'll be standing near a speaker that emits 43 W of acoustic power as a spherical wave. What minimum distance should you be from the speaker to keep the sound intensity level below 94 dB? Express...
What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. Constants At a rock concert, a dB meter registered 125 dB when placed 2.9 Im in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m? 勺 ? ' P-1 Value Units Submit...
Course Home <Ch 16 HW Problem 16.56 Part A The sound from a trumpet radiates uniformly in all directions in air with a temperature of 20°C Al a distance of 4.92 m from the trumpet the sound intensity level is 470 dB. The frequency is 589 Hz Use 344 m/s for the speed of sound in air, 1.20 kg/m for the density of air, and 1.00x10-12 W/m for the reference intensity What is the pressure amplitude at this distance? Express...
Express your answer as an integer Review Constants l Periodic Table View Available Hint(s) Learning Goal To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area on which they are incident Intensity is measured in watts per square meter, or W/m log(1,000,000)- The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear...
30 seconds of exposure to 115 dB sound can damage your hearing, but a much quieter 94 dE may begin to cause damage after 1 hour of continuous exposure. Part A You are going to an outdoor concert, and you'l be standing near a speaker that emits 56 W of acoustic power as a spherical wave. What minimum distance should you be from the speaker to keep the sound intensity level below 94 dB? Express your answer to two significant...
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