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n Review Id During takeoff, the sound intensity level of a jet engine is 150 dB...
2. (2 pts) A sound level of 150 dB is measured at 2 meters from a...
2. (2 pts) A sound level of 150 dB is measured at 2 meters from a jet engine. Find the sound intensity B of the jet engine at a distance of 20 meters assuming intensity falls off as 1/2. (Hint: First find intensity at 150 dB sound level.) 150dB 150d. B = 10Log G-1z) = 1000 W/m2 B (dB) = 2 m. B = I=100x701450) - 1000 W/m2 1000 11/12 = 'rz 2009 10-12
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...
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
What intensity I1 corresponds to 20.0 dB ? Express your answer in watts per square meter....
What intensity I1 corresponds to 20.0 dB ? Express your answer in watts per square meter. You are trying to overhear a most interesting conversation, but from your distance of 10.0 m , it sounds like only an average whisper of 20.0 dB . So you decide to move closer to give the conversation a sound level of 60.0 dB instead. How close should you come? View Available Hint(s) IVALO ? 11 = 9.9 W/m² Submit Previous Answers X Incorrect;...
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...
Sound Intensity & dB: You are watching the space shuttle rise after it launches. The sound...
Sound Intensity & dB: You are watching the space shuttle rise after it launches. The sound level of the shuttle is 170 dB at a distance of 10.0m from the engine flames. Your seat in the bleachers is 10.00 km away. 25. What is the sound level at your ear (in dB)? Note: Pay attention to the units required for the answer. DIRECT SOUNDS Jettake-off, un shot Jack hann er Threshold of pain Rock concert Dance dub Voice shouting Factory...
Review Constants The current shown in (Figure 1) is applied to a 350 nF capacitor. The...
Review Constants The current shown in (Figure 1) is applied to a 350 nF capacitor. The initial voltage on the capacitor is zero. Part A Find the charge on the capacitor at t = 30 jus Express your answer to three significant figures and include the appropriate units. IT μΑ q= 25.103 O Submit Previous Answers Request Answer Part B Find the voltage on the capacitor at t = 50 js. Express your answer to three significant figures and include...
3. A trumpet creates a sound intensity level of 1.15*102 dB at a distance of 1.00...
3. A trumpet creates a sound intensity level of 1.15*102 dB at a distance of 1.00 m. I. What is the sound intensity of a trumpet at this distance? II. What is the sound intensity of five trumpets at this distance? III. Find the sound intensity of five trumpets at the location of the first row of an audience, 8.00 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. IV. Calculate the decibel level of the...
Find the noise level (in dB) of a sound having an intensity of 3.50x10-14 W/m2 b3...
Find the noise level (in dB) of a sound having an intensity of 3.50x10-14 W/m2 b3 dB SubmitPr Previous Answers Request Answer
A concert loudspeaker suspended high off the ground emits 26.0 W of sound power. A small...
A concert loudspeaker suspended high off the ground emits 26.0 W of sound power. A small microphone with a 1.00 cm2 area is 50.0 m from the speaker. Correct Part B How much sound energy impinges on the microphone each second? Express your answer with the appropriate units. MÅ ? 150 dB Submit Previous Answers Request Answer X Incorrect; Try Again; 6 attempts remaining
2. (2 pts) A sound level of 150 dB is measured at 2 meters from a jet engine. Find the sound intensity B of the jet engine at a distance of 20 meters assuming intensity falls off as 1/2. (Hint: First find intensity at 150 dB sound level.) 150dB 150d. B = 10Log G-1z) = 1000 W/m2 B (dB) = 2 m. B = I=100x701450) - 1000 W/m2 1000 11/12 = 'rz 2009 10-12
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...
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
What intensity I1 corresponds to 20.0 dB ? Express your answer in watts per square meter. You are trying to overhear a most interesting conversation, but from your distance of 10.0 m , it sounds like only an average whisper of 20.0 dB . So you decide to move closer to give the conversation a sound level of 60.0 dB instead. How close should you come? View Available Hint(s) IVALO ? 11 = 9.9 W/m² Submit Previous Answers X Incorrect;...
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...
Sound Intensity & dB: You are watching the space shuttle rise after it launches. The sound level of the shuttle is 170 dB at a distance of 10.0m from the engine flames. Your seat in the bleachers is 10.00 km away. 25. What is the sound level at your ear (in dB)? Note: Pay attention to the units required for the answer. DIRECT SOUNDS Jettake-off, un shot Jack hann er Threshold of pain Rock concert Dance dub Voice shouting Factory...
Review Constants The current shown in (Figure 1) is applied to a 350 nF capacitor. The initial voltage on the capacitor is zero. Part A Find the charge on the capacitor at t = 30 jus Express your answer to three significant figures and include the appropriate units. IT μΑ q= 25.103 O Submit Previous Answers Request Answer Part B Find the voltage on the capacitor at t = 50 js. Express your answer to three significant figures and include...
Find the noise level (in dB) of a sound having an intensity of 3.50x10-14 W/m2 b3 dB SubmitPr Previous Answers Request Answer
A concert loudspeaker suspended high off the ground emits 26.0 W of sound power. A small microphone with a 1.00 cm2 area is 50.0 m from the speaker. Correct Part B How much sound energy impinges on the microphone each second? Express your answer with the appropriate units. MÅ ? 150 dB Submit Previous Answers Request Answer X Incorrect; Try Again; 6 attempts remaining
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