A person standing 1.10 m from a portable speaker hears its sound at an intensity of 7.90 X 10^-3 W/m^2. Find the corresponding decibel level.
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- The sound intensity of a conversation at a distance of 5.0 m is 1.7 x 10-7 W / m^2 . Determine the intensity at a distance of 7.0 m. Presume the sound spreads evenly in all directions.What sound level in dB is produced by earphones that create an intensity of 1.50 ✕ 10−2 W/m2? _____ dBA bat emits a sound whose frequency is 81.8 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 41.8 oC, so the speed of sound is not 343 m/s. Assume that air behaves like an ideal gas, and find the wavelength of the sound.
- If a sound with a singular frequency of 580 has an measured intensity of 9.79 x 10-5 w when at a distance of 5.88 m from the source, what is the decibel level when at a distance of 11.9 m from the source?You detect a sound intensity of 0.0000136 W/m2 coming from a speaker with a power of 0.217 W. How far away from the speaker are you standing?People with good hearing can perceive sounds as low in level as −6.62 dB at a frequency of 3000 Hz. What is the intensity of this sound in watts per meter squared?
- A point source emits sound with a power output of120 watts. What is its sound intensity level (indB) at 17.0 meters from the source?The range of human hearing extends from approximately 20 Hz to 20000 Hz. Find the wavelengths of these extremes at a temperature of 38°C. 20 Hz m 20000 Hz mA student sitting in class detects a sound intensity of 6.27×10−76.27×10−7 W/m2 from the teacher speaking. If the power of the teacher's voice is 5.43×10−45.43×10−4 W, how far away is the student from the teacher?