Given that lo = 10-12 watts/meter², what is the decibel level of a sound, for which the sound intensity is 40 watts/meter2? Round your answer to the nearest integer.
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- The sound level at a distance of 3.0 m from a source is 120 dB. a) At what distance will the soundlevel be 100 dB? b) At what distance will the sound level be 10 dB?A round speaker emits sound waves uniformly in all direction. At a distance of 40.0m from the speaker, the sound intensity is 35 dB. What is the sound intensity level in a distance of 10.0m.What is the speed of sound in substance X if a note produced at 440Hz has a wavelength of 14.8 m?
- A certain wave has a frequency of 17.0 Hz and a speed of 20.0 m/s. The wave starts at a source and ends 9.00 m away. If there is a crest at a point on the wave 3.70 m away from the start, how many troughs are there and where are they?Problem #3: What intensity level dB in does a sound of 3. 04 × 10–4 W/m2 correspond to?A sound wave radiates from a speaker in all directions. If the power of the sound source is 250 W, calculate the intensity level in dB of the sound wave 0.4 km from the speaker. Hint: Presume that the sound waves spread as a sphere (not a hemisphere).