The sound level 25 m from a loudspeaker is 66 dB. What is the rate at...
The sound level 25 m from a loudspeaker is 66 dB. What is the rate at which sound energy is produced by the loudspeaker, assuming it to be an isotropic source? Your answer must be in W
Homework Answers
Add Answer to:
The sound level 25 m from a loudspeaker is 66 dB. What is the
rate at...
At a rock concert, a dB meter registered 135 dB when placed 2.3 m in front of a loudspeaker on the stage
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. Part B How far away would the sound level be...
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located...
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located at the corner of two walls. What will be the sound level at the same distance if it is placed in an open area? a. 91 b. 94 d. 103 106 e. f. None of the above c. 97 A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field?...
1)The sound level at a distance of 1.82 m from a source is 146 dB. At...
1)The sound level at a distance of 1.82 m from a source is 146 dB. At what distance will the sound level be 50.7 dB? Answer in units of m. 2)At what distance will the sound level be 7.22 dB? Answer in units of m.
The sound level at a distance 3.00 m away from a source is 120 dB. At...
The sound level at a distance 3.00 m away from a source is 120 dB. At what distance will the sound level decrease to 100 dB?
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 w (a) Find the intensity 10.7 m from the source W/m2 (b) Find the intensity level in decibels at that distance. dB (c) At what distance would you experience the sound at the threshold of pain, 120 dB? Need Help? Read 11. -/2 points SerCP10 14 P023 My No A commuter train passes a passenger platform at a constant speed of 42.1 m/s. The...
You measure the sound intensity level as 70.5 dB at a location that is 4.31 m...
You measure the sound intensity level as 70.5 dB at a location that is 4.31 m from a localized sound source. How far away from the source must you be for the intensity level to fall to 60.5 dB?
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...
At a rock concert, a dB meter registered 126 dB when placed 2.4 m in front...
At a rock concert, a dB meter registered 126 dB when placed 2.4 m in front of a loudspeaker on the stage. 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 using two significant figures. P- W Submit Request Answer Part B How far away would the sound level be a somewhat reasonable 88 dB? Express your answers using two significant figures. Submit...
A 25 MW jet engine produces a sound level of 120 dB, the threshold of pain,...
A 25 MW jet engine produces a sound level of 120 dB, the threshold of pain, at 100 m from the engine. (Recall that the threshold of human hearing is 1 x 10-12 W/m2.) (a) What portion of the jet engine power is lost in producing this sound? (b) You are at your quiet summer house (ambient sound level is 40 dB) and you can just hear the sound of the same jet engine at the airport. How far away...
2) (8 points) Show your work for full credit. An omnidirectional loudspeaker produces sound waves uniformly...
2) (8 points) Show your work for full credit. An omnidirectional loudspeaker produces sound waves uniformly in all directions. A sound intensity of 100 W/mºis measured 1.0 m from the speaker. (a) How far from the speaker will the sound intensity be measured to be 1.0 W/mº? (b) At what distance from the speaker will the sound intensity level be 100.0 dB?
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located at the corner of two walls. What will be the sound level at the same distance if it is placed in an open area? a. 91 b. 94 d. 103 106 e. f. None of the above c. 97 A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field?...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 w (a) Find the intensity 10.7 m from the source W/m2 (b) Find the intensity level in decibels at that distance. dB (c) At what distance would you experience the sound at the threshold of pain, 120 dB? Need Help? Read 11. -/2 points SerCP10 14 P023 My No A commuter train passes a passenger platform at a constant speed of 42.1 m/s. The...
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...
At a rock concert, a dB meter registered 126 dB when placed 2.4 m in front of a loudspeaker on the stage. 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 using two significant figures. P- W Submit Request Answer Part B How far away would the sound level be a somewhat reasonable 88 dB? Express your answers using two significant figures. Submit...
2) (8 points) Show your work for full credit. An omnidirectional loudspeaker produces sound waves uniformly in all directions. A sound intensity of 100 W/mºis measured 1.0 m from the speaker. (a) How far from the speaker will the sound intensity be measured to be 1.0 W/mº? (b) At what distance from the speaker will the sound intensity level be 100.0 dB?
Most questions answered within 3 hours.
-
Hows does water affect the digestion of fats ?
asked 59 minutes ago -
A buffer that contains 0.41 M of a base, B and 0.21 M of its
conjugate...
asked 1 hour ago -
Pleaaaaaaaasssssse help me please please it's more important
:((((((((((((((((((((
CASE STUDY
Nissan Company
Nissan Motor Company,...
asked 1 hour ago -
Calculate the concentration of hydronium and hyroxide ions in 1)
2.0 mol/L HNO3 2) 0.5 mol/L...
asked 1 hour ago -
In a loop-the-loop ride a car goes around a vertical, circular
loop at a constant speed....
asked 1 hour ago -
50 grams each of water (18.015 g/mol) and ethylene glycol
(C2H6O2) (62.07 g/mol) are mixed. At...
asked 1 hour ago -
The life expectancy of sport utility vehicles follows a normal
distribution with a mean of 145.8...
asked 1 hour ago -
If an object with mass of 5 kg is pushed with a force of 552 N,...
asked 1 hour ago -
Suppose your program already has a list called nums, which
contains several numbers. Write a for...
asked 1 hour ago -
A spherical shell with a finite thickness just barely floats in
water. If the shell is...
asked 1 hour ago -
Explain in detail whether the following is true or false:
Total factor productivity will rise only...
asked 1 hour ago -
A firm pays a $2.50 dividend at the end of year one
(D1), has a stock...
asked 1 hour ago