At a distance of 73 cm, a mosquito can barely be heard at a sound level...
At a distance of 73 cm, a mosquito can barely be heard at a
sound level of 4.1 dB.
What is the intensity of this sound?
If the same mosquito were flying at a distance of 1.3 cm from your
ear, what would be the intensity of its sound?
If there were two mosquitoes 1.3 cm from your ear, how loud would
they sound? (dB).
How loud would the mosquito sound at 1.3 cm from your ear (dB)?
Hint: sound intensities add together. Decibels do not.
Homework Answers
Add Answer to:
At a distance of 73 cm, a mosquito can barely be heard at a
sound level...
at a distance of a few meters one mosquito produces a sound that is barely audible,...
at a distance of a few meters one mosquito produces a sound that is barely audible, about 10 db. what would be the sound level for 10,000 of these insects all together at this same close range
A mosquito located two meters away produces a sound intensity of 85 dB. How much would...
A mosquito located two meters away produces a sound intensity of 85 dB. How much would the intensity be if there were 200 mosquitoes at the same distance? You can assume that the sound is equally distributed in all directions.
5. By how many decibels do you reduce the sound intensity level due to a source...
5. By how many decibels do you reduce the sound intensity level due to a source of sound if you double your distance from it? Assume that the waves expand spherically. dB 6. The sound in a classroom is 63000 times as intense as the minimum threshold of hearing. What is the intensity level of this sound in decibels? dB
3. A trumpet creates a sound intensity level of 1.15*102 dB at a distance of 1.00...
3. A trumpet creates a sound intensity level of 1.15*102 dB at a distance of 1.00 m. I. What is the sound intensity of a trumpet at this distance? II. What is the sound intensity of five trumpets at this distance? III. Find the sound intensity of five trumpets at the location of the first row of an audience, 8.00 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. IV. Calculate the decibel level of the...
The loudest sound produced by a living organism on Earth is made by the bowhead whale...
The loudest sound produced by a living organism on Earth is made by the bowhead whale (Balaena mysticetus). These whales can produce a sound that, if heard in air at a distance of 2.50 m , would have an intensity level of 137 dB . This is roughly the equivalent of 5000 trumpeting elephants. Question: How far away can you be from a 137 dB sound and still just barely hear it?(Assume a point source, and ignore reflections and absorption.)...
Sound Level Workset Name Sdverstone PH105 Spring 2018 Show all math stops and write wnis wi...
Sound Level Workset Name Sdverstone PH105 Spring 2018 Show all math stops and write wnis wi The sound level in decibels is given by Sound Level Exercise ?-10 where / is the intensity in W/mi and A 10 w I. If a sound level is 0 dB, does this mean tut there is no sound? Explain. 2. Does negative dB have meaning? Explain 3. The intensity of a sound from a motorcycle is twice that of a certain car in...
Question: Cicadas are loud flying insects that emerge en masse. Imagine you measure the sound level...
Question: Cicadas are loud flying insects that emerge en masse. Imagine you measure the sound level of a single male cicada to be 88.4 dB when your sound meter is 0.617 m from it. Only male cicadas make such loud noises. It is actually possible for cicadas to damage your hearing, you can learn more about how they make noise here. Part 1) What is the intensity of the sound produced by the cicada? I= W/m2 Part 2) Exactly 69...
Express your answer as an integer Review Constants l Periodic Table View Available Hint(s) Learning Goal...
Express your answer as an integer Review Constants l Periodic Table View Available Hint(s) Learning Goal To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area on which they are incident Intensity is measured in watts per square meter, or W/m log(1,000,000)- The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
At 10:02 am local time on August 27, 1883, the Krakatoa volcano exploded. This volcanic eruption...
At 10:02 am local time on August 27, 1883, the Krakatoa volcano exploded. This volcanic eruption supposedly generated the loudest sound ever heard on Earth. Measurements at the time placed the peak sound level of 165 dB at a distance of 40 miles from the eruption! This large transient sound level will break your ear drums and corresponds to an increase in air pressure of 2.5 inches of mercury. (a) What is the intensity (I) of the eruption sound at...
A mosquito located two meters away produces a sound intensity of 85 dB. How much would the intensity be if there were 200 mosquitoes at the same distance? You can assume that the sound is equally distributed in all directions.
Sound Level Workset Name Sdverstone PH105 Spring 2018 Show all math stops and write wnis wi The sound level in decibels is given by Sound Level Exercise ?-10 where / is the intensity in W/mi and A 10 w I. If a sound level is 0 dB, does this mean tut there is no sound? Explain. 2. Does negative dB have meaning? Explain 3. The intensity of a sound from a motorcycle is twice that of a certain car in...
Question: Cicadas are loud flying insects that emerge en masse. Imagine you measure the sound level of a single male cicada to be 88.4 dB when your sound meter is 0.617 m from it. Only male cicadas make such loud noises. It is actually possible for cicadas to damage your hearing, you can learn more about how they make noise here. Part 1) What is the intensity of the sound produced by the cicada? I= W/m2 Part 2) Exactly 69...
Express your answer as an integer Review Constants l Periodic Table View Available Hint(s) Learning Goal To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area on which they are incident Intensity is measured in watts per square meter, or W/m log(1,000,000)- The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
Most questions answered within 3 hours.
-
The phylum Protista has often been referred to as a junk drawer
of classification. Explain what...
asked 2 minutes ago -
The average amount of money spent for lunch per person in the
college cafeteria is $7.09...
asked 4 minutes ago -
You follow the lab procedure and at the end of Part 4C, you used
an average...
asked 23 minutes ago -
Write 250-450 words, about the following: • Analyze how a
servant leader in your organization or...
asked 27 minutes ago -
3. American and Japanese workers can each produce 4 cars a
year. An American worker can...
asked 30 minutes ago -
On October 1, 20X1, a company purchased a piece of land by
agreeing to pay the...
asked 42 minutes ago -
Jamie is doing a survey at her school about whether the students
feel the cafeteria food...
asked 47 minutes ago -
What are the roles of 3' and 5' untranslated regions in
mRNAs?
asked 48 minutes ago -
A domestic television receives antenna delivers a sky noise
power of -105 dBm to a matched...
asked 47 minutes ago -
What do you think are the chemical reactions involved in the
breathalyzer tests administered to potentially...
asked 1 hour ago -
A random sample of 120 observations produces a mean of
38.2 from a population with a...
asked 1 hour ago -
The average area of land burned by forest fires every year in
Canada is 2.5 million...
asked 1 hour ago