L = 10 log (7) where I is the intensity of sound in watts per square metre 10-¹2 W/m². Determine the intensity of a baby screaming if the noise leve- Recall that (W/m²) and Io is 100 dB. =
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A: Here, for the intensity calculation we use the formula, I (dB) = 10 log[I/Io] Corresponding sound…
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Q: he noise a lawn mower produces is 80 dB. How much noise is from 10 identical lawn mowers?
A: Given: The sound level of the lawnmower is 80 dB. The number of identical lawnmowers is 10.
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A: Given:I1 =30Wm2 increasing intensity =20dBTo find: New intensity I2=?
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A: Given: The speed of the sound is 340 m/s. The length of the one-end closed pipe is 2 m.
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A: Frequency heard, f' = 485 Hz True frequency, f = 504 Hz speed of sound, v = 347 m/s
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A: Frequency of both strings = 771 Hz The tension is slightly decreased in one of the stings. For…
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A: Given Frequency = 100 Hz Loudness = 80 phons
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A: Given: β1=80 dB
Q: The noise a lawn mower produces is 80 dB. How much noise is from 3 identical lawn mowers?
A: Given Noise produced by one mower =80dB no of identical mowers x=3
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A: Given: f = 59.3 KHz = 59300 Hz v = 339 m/s Smallest size will be equal to the wavelength.
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Q: Use the data in Table 3 to make this plot. That is plot I, on the -axis vs. (1/d^2), on the x-axis.…
A: The graph for the Intensity verses 1/(distance)2 is plotted using following steps.
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- Is this statement True or False; please explain why The Mach number is the number of times larger than the speed of sound an object is travelingIf the sound level of one barking dog is 40 dB, estimate the sound level of 2 dogs barking simultaneously in the same place.Two strings both vibrate at exactly 764 Hz. The tension in one of them is then increased slightly. As a result, 6 beats per second are heard when both strings vibrate. What is the new frequency of the string that was tightened? Calculate to one decimal.
- An ocean wave has a length of12 m. A wave passes a fixedposition every 3 seconds. What isthe speed of the wave?2. The loudness, L, of a sound in decibels (dB) can be calculated using the formula L = 10 Iog (-), Iis I is I=1012 Wm2 The sound level of a moving the intensity of the sound in watts per square metre (W/m2) and power lawn mower is 109 dB. The noise level in front of the amplifiers at a concert is about 118 dB. How many times louder is the noise at the front of the amplifiers than the noise of a moving power lawn mower? 3]A point source emits sound waves with a power oulput of 288 watts. What is the sound level (in dB) at a distance of 69.7 m? (Answer in 2 decimal places)
- cicadas produce a buzzing aound that has a wavelength in te air of 2.69 m . If the spped of the sound in air is 346m/s , what is the frequency of teh sound produced by a cicada? what is its period?1. The noise from a power mower was measured at 109 dB. The noise level at a rock concert was measured at 118 dB. Find the ratio of the intensity of the rock music to that of the power mower. (Round your answer to the nearest whole number.) 2. The decibel level of the sound of a subway train was measured at 98 dB. Find the intensity in watts per square meter (W/m2). (Give your answer in scientific notation, correct to one decimal place.) (blank) × 10(blank) W/m2A pipe closed at one end has a first overtone of 489 Hz. What is the second overtone in Hz?
- Light travels faster than sound. During a thunderstorm, an approximately 5s time lapse between observing the lighting and hearing the thunder. Calculate approximately howfar in meters was the lightning flash?Using the sound level versus frequency plot with equal-loudness curves shown below, calculate the intensity in W/m2 for the 10,000-Hz sound having a loudness of 80 phons. (Use your estimate)The intensity of a sound is 400 W/m2 If the intesity level of sound decreased by 10 decibels, what is the new observed intensity?