A very noisy chain saw operated by a tree surgeon emits a total acoustic power of 32.0 W uniformly in all directions.
At what distance from the source is the sound level equal to 60.0 dB ?
A very noisy chain saw operated by a tree surgeon emits a total acoustic power of...
A very noisy chain saw operated by a tree surgeon emits a total acoustic power of 32.0 W uniformly in all directions. A) At what distance from the source is the sound level equal to 106 dB ? B) At what distance from the source is the sound level equal to 54.0 dB ?
A power saw radiates sound uniformly in all directions and is measured at 103 dB 1.66 m from the saw. At what distance from the saw should you be so that the sound is at a safe level of 65.0 dB? Number Units (Anser must have 3 significant figures.)
A source emits sound uniformly in all directions. There are no reflections of the sound. At a distance of 12 m from the source, the intensity of the sound is 3.3 × 10-3 W/m2. What is the total sound power P emitted by the source?
A listener increases his distance from a sound source by a factor of 5.45. Assuming that the source emits sound uniformly in all directions, what is the change in the sound intensity level in dB?
A loudspeaker emits 31.6 W of acoustic power. A microphone with an effective cross-sectional area of 75.2 mm2 is located at a distance 194 m from the speaker. Calculate (a) the sound intensity at the location of the microphone, (b) the power incident on the microphone and (c) the total amount of energy that impinges on the microphone in 25.0 min.
A listener increases his distance from a sound source by a factor of 2.29. Assuming that the source emits sound uniformly in all directions, what is the change in the sound intensity level in dB?
A point source emits sound waves with a power output of 100 watts. What is the sound level (in dB) at a distance of 10 m? 16-5
going to an outdoor concert, and you'll be standing near a You are speaker that emits 50 W of acoustic power as a spherical wave. What minimum distance should you be from the speaker to keep the sound intensity level below 94 dB? Express your answer to two significant figures and include the appropriate units.
A light source emits EM waves of 4.00 W total power uniformly in all directions. Assume the wave have a single frequency (monochromatic) a) What is the intensity of the waves at 2.00 m from the light source? b) What iw the electric eld amplitude Eo produced at 2.00 m from the light source?
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...