A cicada is at the top of a 25.0-m-high tree, producing sound that is propagating in...
A cicada is at the top of a 25.0-m-high tree, producing sound that is propagating in all directions.How far away from the tree should you stand so that the intensity of the sound that you hear is 16 times less than when you were standing at the bottom of the tree? Assume your height is 1.7 m. Express your answer with the appropriate units.
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A cicada is at the top of a 25.0-m-high tree, producing sound
that is propagating 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...
Your friend is belching the alphabet. Where you are standing, a distance of 2 meters from...
Your friend is belching the alphabet. Where you are standing, a distance of 2 meters from your friend, the peak sound level of their belching is 68.2 dB. You would like to move far enough away from them that you won’t have to hear their belching. Assuming that the belch noises approximate spherical waves, how far should you stand from your friend in order for the peak intensity of the sound to be the threshold of hearing, 10^−12 W/m2?
Loud Bird Review A loud bird is chirping at the top of a tall tree. The...
Loud Bird Review A loud bird is chirping at the top of a tall tree. The bird outputs 60 W of power, and the sound energy emitted by the bird propagates equally in all directions Suppose you are walking directly toward the bird at 0.55 m/s. Part A What is the sound intensity level at a point where you are 20 m from the bird? Express your answer with the appropriate units BValue Units Submit Request Answer Part B At...
A janitor standing on the top floor of a building wishes to determine the depth of...
A janitor standing on the top floor of a building wishes to determine the depth of the elevator shaft. They drop a rock from rest and hear it hit bottom after 3.06 s. (a) How far (in m) is it from where they drop the rock to the bottom of the shaft? The speed of sound at the temperature of air in the shaft is 336 m/s. (Round your answer to at least three significant figures. Use g = 9.80...
A janitor standing on the top floor of a building wishes to determine the depth of...
A janitor standing on the top floor of a building wishes to determine the depth of the elevator shaft. They drop a rock from rest and hear it hit bottom after 3.06 s. (a) How far (in m) is it from where they drop the rock to the bottom of the shaft? The speed of sound at the temperature of air in the shaft is 336 m/s. (Round your answer to at least three significant figures. Use g = 9.80...
A building inspector standing on the top floor of a building wishes to determine the depth...
A building inspector standing on the top floor of a building wishes to determine the depth of the elevator shaft. They drop a rock from rest and hear it hit bottom after 3.14 s. (a) How far (in m) is it from where they drop the rock to the bottom of the shaft? The speed of sound at the temperature of air in the shaft is 336 m/s. (Round your answer to at least three significant figures. Use g =...
UJABA FUUF 10JER A janitor standing on the top floor of a building wishes to determine...
UJABA FUUF 10JER A janitor standing on the top floor of a building wishes to determine the depth of the elevator shaft. They drop a rock from rest and hear it hit bottom after 2.36 s (a) How far (in m) is it from where they drop the rock to the bottom of the shaft? The speed of sound at the temperature of air in the shaft is 336 m/s. (Round your answer to at least three significant figures. Use...
1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s....
1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s. The density of the alcohol at that temperature is 650 kg/m^3. At a temperature of 20°C, find the bulk modulus of the alcohol. 1030 MPa 1080 MPa 1140 MPa 1190 MPa 1240 MPa 2. During a thunderstorm, you hear the sound 4 s after you see the lightning flash. How far did it fall? Assume the temperature outside is approximately 20 1.324 km 1.372...
While examining the terrain, from the top of an extraterrestrial tree H 100 [m] high a...
While examining the terrain, from the top of an
extraterrestrial tree H 100 [m] high a heavy fruit is detached, at
that moment you were on the ground directly below (see figure), and
reacting quickly manages to draw his weapon in such a way that
simultaneously shoots a super projectile with initial speed of 50 m
/ s upwards with the intention of destroying the fruit.
Determine:
a) The height at which the projectile impacts the
fruit.
b) The speed...
this is one question with 3 parts D. From a location 4.0 m away, you listen...
this is one question with 3 parts
D. From a location 4.0 m away, you listen to a jackhammer breaking concrete. 1. How far away would you have to stand in order to reduce the sound intensity by a factor of 8 (12 = 11/8)? Show your calculation. 2. If the intensity of the sound has decreased by a factor of 8, by what factor has the amplitude of the sound wave decreases? Explain your answer. 3. If the intensity...
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...
Loud Bird Review A loud bird is chirping at the top of a tall tree. The bird outputs 60 W of power, and the sound energy emitted by the bird propagates equally in all directions Suppose you are walking directly toward the bird at 0.55 m/s. Part A What is the sound intensity level at a point where you are 20 m from the bird? Express your answer with the appropriate units BValue Units Submit Request Answer Part B At...
UJABA FUUF 10JER A janitor standing on the top floor of a building wishes to determine the depth of the elevator shaft. They drop a rock from rest and hear it hit bottom after 2.36 s (a) How far (in m) is it from where they drop the rock to the bottom of the shaft? The speed of sound at the temperature of air in the shaft is 336 m/s. (Round your answer to at least three significant figures. Use...
While examining the terrain, from the top of an
extraterrestrial tree H 100 [m] high a heavy fruit is detached, at
that moment you were on the ground directly below (see figure), and
reacting quickly manages to draw his weapon in such a way that
simultaneously shoots a super projectile with initial speed of 50 m
/ s upwards with the intention of destroying the fruit.
Determine:
a) The height at which the projectile impacts the
fruit.
b) The speed...
this is one question with 3 parts
D. From a location 4.0 m away, you listen to a jackhammer breaking concrete. 1. How far away would you have to stand in order to reduce the sound intensity by a factor of 8 (12 = 11/8)? Show your calculation. 2. If the intensity of the sound has decreased by a factor of 8, by what factor has the amplitude of the sound wave decreases? Explain your answer. 3. If the intensity...
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