Spherical sound waves are emitted from a 2.00-W source. Assuming that the energy of the waves...

Question

Question

Spherical sound waves are emitted from a 2.00-W source. Assuming that the energy of the waves is conserved, what is the intensity at 0.60 m from the source? Submit Answer Tries 0/99 What is the intensity at 3.10 m from the source? Submit Answer Tries 0/99

science physics

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

A)

Intensity = Power/( 4*pi*r^2)

Intensity = (2 W)/(4 * pi*(0.6 m)^2)

Intensity = 0.442 W/m^2

the intensity at 0.6 m away is 0.442 W/m^2

B)

Intensity = Power/( 4*pi*r^2)

Intensity = (2 W)/(4 * pi*(3.10 m)^2)

Intensity = 0.01656 W/m^2

the intensity at 3.10 m away is 0.01656 W/m^2

Add a comment

Answer 2

Similar Homework Help Questions

Spherical sound waves are emitted from a 2.00-W source. Assuming that the energy of the waves...

Spherical sound waves are emitted from a 2.00-W source. Assuming that the energy of the waves is conserved, what is the intensity at 0.60 m from the source? Submit Answer Tries 0/99 What is the intensity at 3.10 m from the source? Submit Answer Tries 0/99
A spherical source is radiating sound waves with a potency of 55.0 watts. A) At what...

A spherical source is radiating sound waves with a potency of 55.0 watts. A) At what distance is the observer from the source that detects an intensity of 7.0 x10^-2 B) What’s the level of intensity (decibels) at this distance
Sound waves at ultrasonic frequencies attenuate much faster than audible sound waves. The sound intensity level...

Sound waves at ultrasonic frequencies attenuate much faster than audible sound waves. The sound intensity level of a point source of ultrasonic sound waves is measured as 100 dB at a distance of 1.00 m from the source and 65 dB at 2.00 m. Assuming the waves spread in all directions, what is the attenuation coefficient alpha? [Answer in 1/m to within 5%]

Sound waves at ultrasonic frequencies attenuate much faster than audible sound waves. The sound intensity level...

Sound waves at ultrasonic frequencies attenuate much faster than audible sound waves. The sound intensity level of a point source of ultrasonic sound waves is measured as 100 dB at a distance of 1.00 m from the source and 65 dB at 2.00 m. Assuming the waves spread in all directions, what is the attenuation coefficient alpha? [Answer in 1/m to within 5%]
Find the speed of the waves on an 800.0 mg violin string 23.0-cm long if the...

Find the speed of the waves on an 800.0 mg violin string 23.0-cm long if the fundamental frequency is 902.0 Hz. Submit Answer Tries 0/99 What is the tension in the string? Submit Answer Tries 0/99 What is the wavelength of the waves on the string? Submit Answer Tries 0/99 What is the wavelength of the sound waves emitted by the string? Assume the speed of sound in air is 343.0 m/s Submit Answer Tries 0/99
SOUND WAVES 12. Observer 2 is three times as far from a point (spherical) source of...

SOUND WAVES 12. Observer 2 is three times as far from a point (spherical) source of sound as is observer 1. The ratio I2/I1 of the intensities (observer 2 intensity to observer 1 intensity) of the sound detected by the observers is a) 9 b) 1/9 c) 1/3 d) 3 13. Which of the following frequencies would correspond to a sound with an ultrasonic frequency? a) 100Hz b) 1000Hz c) 10000Hz d) 100000Hz

A source emits sound waves equally in all directions. The intensity of the waves 2.50 m...

A source emits sound waves equally in all directions. The intensity of the waves 2.50 m from the source is 1.90 times 10^-4 W/m^2. Find the power of the source, If the diameter of your eardrum is 8.4 mm, how far from the source do you have to be located so that your ears combined receive 0.42 times 10^-12 J of energy each second?
The pattern of sound waves emitted by a source traveling at constant velocity is shown in...

The pattern of sound waves emitted by a source traveling at constant velocity is shown in the figure below. Each of the wave fronts shown in the image was emitted when the source was at one of the blue dots shown in the image. (a) In what direction is the source moving? to the right Oto the left (b) What is the ratio of the speed of the source to the speed of sound? 2 (c) If you are at...
By measurement you determine that sound waves are spreading out equally in all directions from a...

By measurement you determine that sound waves are spreading out equally in all directions from a point source and that the intensity is 2.9 times 10^-2 W/m^2 at a distance of 4.7 m from the source. What is the intensity at a distance of 3.0 m from the source? Express your answer using two significant figures. How much sound energy does the source emit in one hour if its power output remains constant? Express your answer using two significant figures.

At a concert, a person is standing 2.00 m from a speaker, where the sound intensity...

At a concert, a person is standing 2.00 m from a speaker, where the sound intensity is 0.120 W/m? Another person is 32,0 m from the speaker. Assume the sound is emitted equally in all directions to -1.00 x 10-12 W/m2 a) What is the intensity in Wim? at 32.0 m from the speaker? b) What is the sound level in dB at 32.0 m from the speaker? ОА The intensity is 7.50 x 10 wim? DB The intensity is...

Spherical sound waves are emitted from a 2.00-W source. Assuming that the energy of the waves...

Homework Answers

Add Answer to:
Spherical sound waves are emitted from a 2.00-W source. Assuming that the energy of the waves...

Post as a guest

Earn Coins