If 300 m away from an ambulance siren the sound intensity level is 65 dB, what...

If 300 m away from an ambulance siren the sound intensity level is 65 dB, what is the sound intensity level 30 m away from that ambulance siren? Specify your answer in units of decibel (dB).

Solutions

Expert Solution

Initial distance from the ambulance siren = R₁ = 300 m

Sound level intensity of the ambulance siren at a distance of 300 m = ₁ = 65 dB

Sound intensity of the ambulance siren at a distance of 300 m = I₁

I₁ = 3.162 x 10^-6 W/m²

New distance from the ambulance siren = R₂ = 30 m

Sound intensity of the ambulance siren at a distance of 30 m = I₂

The sound is distributed equally in a spherical manner therefore,

I₂ = 3.162 x 10^-4 W/m²

Sound level intensity of the ambulance siren at a distance of 30 m = ₂

₂ = 85 dB

Sound level intensity of the ambulance siren at a distance of 30 m = 85 dB

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

A trumpet creates a sound intensity level of 1.05 102 dB at a distance of 0.80 m....

A trumpet creates a sound intensity level of 1.05 102 dB at a distance of 0.80 m. (a) What is the sound intensity of a trumpet at this distance? W/m2 (b) What is the sound intensity of five trumpets at this distance? W/m2 (c) Find the sound intensity of five trumpets at the location of the first row of an audience, 7.60 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. W/m2 (d) Calculate the decibel level...

A sound wave with an intensity level of 80.6 dB is incident on an eardrum of...

A sound wave with an intensity level of 80.6 dB is incident on an eardrum of area 0.600 ✕ 10-4 m2. How much energy is absorbed by the eardrum in 4.0 minutes? µJ? A source of sound waves of frequency 1.2 kHz is traveling through the air at 0.55 times the speed of sound. (a) Find the frequency of the sound received by a stationary observer if the source moves toward her. Hz (b) Repeat if the source moves away...

Explain the di erence between sound intensity and sound intensity level in terms of what they...

Explain the di erence between sound intensity and sound intensity level in terms of what they measure You're listening to two speakers. One plays a 440 Hz tone, and the other plays a 442 Hz tone, both at the same volume. Name the kind of interference you'd hear, and describe how the volume of the sound you hear would vary, as speci cally as possible You're standing at rest on the oor. If you then rise up on your ptoes,...

A siren emitting a sound of frequency 1100 Hz moves away from you toward the face...

A siren emitting a sound of frequency 1100 Hz moves away from you toward the face of a cliff at a speed of 15 m/s. Take the speed of sound in air as 330 m/s. (a) What is the frequency of the sound you hear coming directly from the siren? (Give your answer to at least one decimal place.) Hz (b) What is the frequency of the sound you hear reflected off the cliff? (Give your answer to at least...

A.) If the sound volume increases from 60 dB to 80 dB, then the sound volume...

A.) If the sound volume increases from 60 dB to 80 dB, then the sound volume increases by a factor of??? (Remember that you can enter large numbers like 100000 as 1e5) B.) If the sound volume decreases from 120 dB to 40 dB, then the sound volume decreases by a factor of??

Suppose that when you’re 12 ft away from the source of a sound, it’s intensity is...

Suppose that when you’re 12 ft away from the source of a sound, it’s intensity is 3 X 10^-6 W/m^2, If you move so that you are now 6ft away from the source of the sound, what is the intensity? If you move again so that now you’re 24 ft away from the source of the sound, what is the intensity? At what point do you perceive the sound as having the highest amplitude?

Find the intensity of 22.0 dB sound. Can you explain how you got it and what...

Find the intensity of 22.0 dB sound. Can you explain how you got it and what is dB? sorry its confusing and I keeping getting it wrong, I think the units would be Hz but I am not sure...

A jet plane at take-off can produce sound of intensity 9.20 W/m^2 at 30.2 m away....

A jet plane at take-off can produce sound of intensity 9.20 W/m^2 at 30.2 m away. But you prefer the tranquil sound of normal conversation, which is 1.0 m0W/m^2. Assume that the plane behaves like a point source of sound.Part A: What is the closest distance you should live from the airport runway to preserve your peace of mind? r=?kmPart B: What intensity from the jet does your friend experience if she lives twice as far from the runway as...

A jet plane at take-off can produce sound of intensity 9.00 W/m2 at 31.0 m away....

A jet plane at take-off can produce sound of intensity 9.00 W/m2 at 31.0 m away. But you prefer the tranquil sound of normal conversation, which is 1.0 μW/m2. Assume that the plane behaves like a point source of sound. Part A What is the closest distance you should live from the airport runway to preserve your peace of mind? Express your answer using two significant figures. r = km SubmitMy AnswersGive Up Part B What intensity from the jet...

a. If the intensity of sound from a jet engine is 10 W/m 2 at a...

a. If the intensity of sound from a jet engine is 10 W/m 2 at a distance of 30 m, how far away from the jet do you have to be for the intensity to be 0.1 W/m 2 ? b. Suppose that you hear a clap of thunder 5 s after seeing the lightning stroke. If the speed of sound in the air is 343 m/s and the speed of light in air is 3 × 10 8 m/s,...

Subjects