2. A person initially stands 3.60 m from a source of 245 Hz sound, emitting equally in all directions. The person hears a sound of 55.0 dB. The person slowly walks toward the source of the sound at 2.00 m/s. The person stops at a final position that is a distance of 1.80 m from the source.
a. Find the power of the emitted sound. _____________________________
b. Find the sound intensity at the final position. _____________________________
c. Find the sound intensity level at the final position.
2. A person initially stands 3.60 m from a source of 245 Hz sound, emitting equally...
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...
3.) You run with 10 mph, away from a sound source that is emitting equally in all directions. What happens to the intensity and frequency of the sound you hear (attempt a quantitative solution) ?
At a concert, a person is standing 2.00 m from a speaker, where the sound intensity is 0.120 W/m2. Another person is 32.0m from the speaker. Assume the sound is emitted equally in all directions. lo = 1.00 x 10-12 W/m2 a) What is the intensity in W/m2 at 32.0 m from the speaker? b) What is the sound level in dB at 32.0 m from the speaker? The intensity is 7.50 x 10-3 W/m2 The intensity is 3.00 x...
At a concert, a person is standing 2.00 m from a speaker, where the sound intensity is 0.120 W/m2. Another person is 32.0 m from the speaker. Assume the sound is emitted equally in all directions. lo=1.00 x 10-12 W/m2 a) What is the intensity in W/m2 at 32,0 m from the speaker? b) What is the sound level in dB at 32.0 m from the speaker? A. The intensity is 7.50 x 10-3 W/m2 OB. The intensity is 3.00...
At a concert, a person is standing 2.00 m from a speaker, where the sound intensity is 0.120 W/m2. Another person is 32.0 m from the speaker. Assume the sound is emitted equally in all directions. I0 = 1.00 x 10-12 W/m2 a) What is the intensity in W/m2 at 32.0 m from the speaker? b) What is the sound level in dB at 32.0 m from the speaker? A. The intensity is 7.50 x 10-3 W/m2 B. The intensity...
At point A, 3.20 m from a small source of sound that is emitting uniformly in all directions, the intensity level is 51.0 dB. a) What is the intensity of the sound at A? I got I = 1.26×10−7 W/m2 and it is correct. b)How far from the source must you go so that the intensity is one-fourth of what it was at A? I got R1 R1 = 6.40 m and it is correct. c) How far must you...
A person leaning over a 122 m -deep well accidentally drops a siren emitting sound of frequency 2450 Hz . Just before this siren hits the bottom of the well, find the frequency and wavelength of the sound the person hears Just before this siren hits the bottom of the well, find the frequency of the sound the person hears coming directly from the siren. Just before this siren hits the bottom of the well, find the wavelength of the...
QUESTION 6 A. At a concert, a person is standing 2.00 m from a speaker, where the sound intensity is 0.120 W/m2. Another person is 32.0 m from the speaker. Assume the sound is emitted equally in all directions. 10 = 1.00 x 10-12 W/m2 a) What is the intensity in W/m2 at 32.0 m from the speaker? b) What is the sound level in dB at 32.0 m from the speaker? "The intensity is 7.50 x 10-3 W/m2 The...
A person standing 1.05 m from a portable speaker hears its sound at an intensity of 6.30 x 10-3 W/m2 a) Find the corresponding decibel level. (Answer in dB). b) Find the sound intensity (in W/m2 ) at a distance of 42.0 m, assuming the sound propagates as a spherical wave. ( answer in W/m2 ). c) Find the decibel level at a distance of 42.0 m. (answer in dB).
Tuning fork 1 Tuning fork 2 Bob 9.0 m - 3.0m - Two identical tuning forks are positioned 9.0 m apart, and emit sound equally in all directions. Alex is standing exactly halfway between the tuning forks, and Bob is standing 3.0 m to the right of the rightmost tuning fork. Alex hears an intensity of one tuning fork of 55 dB playing at 300 Hz. 1. How much power is emitted as sound by one tuning fork? 2. When...