Sound Waves Questions

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OSCOLPHYS2016 17.4.WA.033.
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Use the exact values you enter in previous answer(s) to make later calculation(s).
Two submarines are underwater and traveling directly away from each other. Su

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3. [-70.2 Points] DETAILS OSCOLPHYS2016 17.4.WA.033. MY NOTES PRACTICE ANOTHER ASK YOUR TEACHER Use the exact values you enter in previous answer(s) to make later calculation(s). Two submarines are underwater and traveling directly away from each other. Sub 1 has a speed of 12 m/s and sub 2 has a speed of 16 m/s. Sub 1 sends out a 1820-Hz sonar wave that travels at a speed of 1532 m/s. (a) Determine the frequency detected by sub 2 (to the nearest Hz). 1547 Hz (b) Part of the sonar wave sent from sub 1 is reflected off of sub 2 and returns to sub 1. Determine the frequency sub 1 detects from this reflected wave (to the nearest Hz). Hz Additional Materials Reading Viewing Saved Work Revert to Last Response

A friend of yours is loudly singing a single note at 363 Hz while driving towards you at 15 m/s on a
day when the speed of sound is 336m/s (you are standing still). What frequency do you hear? Give
your answer in Hz, and round to the nearest integer.

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A friend of yours is loudly singing a single note at 363 Hz while driving towards you at 15 m/s on a day when the speed of sound is 336m/s (you are standing still). What frequency do you hear? Give your answer in Hz, and round to the nearest integer.

The G string on a guitar is 49 cm long and has a fundamental
frequency of 196 Hz. A guitarist can play different notes by pushing
the string against various frets, which changes the string's length. The
ninth fret from the neck gives E (329.63 Hz), the ten

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The G string on a guitar is 49 cm long and has a fundamental frequency of 196 Hz. A guitarist can play different notes by pushing the string against various frets, which changes the string's length. The ninth fret from the neck gives E (329.63 Hz), the tenth fret gives F (349.23 Hz) Part A How far apart are the ninth and tenth frets? Express your answer to two significant figures and include the appropriate units. MA ? AL = Value Units Submit Previous Answers Request Answer * Incorrect; Try Again Provide Feedback

QUESTION 9
An eagle flying at 28 m/s emits a cry whose frequency is 370 Hz. A blackbird is moving in the same direction as the eagle at 11.32 m/s. (Assume the
speed of sound is 343 m/s). What frequency does the blackbird hear (in Hz) as the eagle approache

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Sound Waves Solutions

QUESTION 9 An eagle flying at 28 m/s emits a cry whose frequency is 370 Hz. A blackbird is moving in the same direction as the eagle at 11.32 m/s. (Assume the speed of sound is 343 m/s). What frequency does the blackbird hear (in Hz) as the eagle approaches the blackbird?

QUESTION 21
For each of the following questions, sketch the corresponding standing wave pattern and find the values for each question.
The effective length of the resonance chamber in an oboe is 0.75 m. The oboe resonates like a tube closed at one end.
(a)

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Sound Waves Solutions

QUESTION 21 For each of the following questions, sketch the corresponding standing wave pattern and find the values for each question. The effective length of the resonance chamber in an oboe is 0.75 m. The oboe resonates like a tube closed at one end. (a) Find the frequency of the lowest pitch the oboe can play. (b) If a hole is opened (2/5)L from the open end of the oboe, find the frequency of the lowest possible resulting pitch. (c) On a musical instrument, a string of linear mass density 5 g/m, vibrating in its fifth harmonic mode, will produce a wave of frequency 768 Hz when tightened to a tension of 80 N. What is the length of the string?

QUESTION 22
Agiant sea monster chases a deep sea submarine near the bottom of the North Atlantic. The submarine is moving at 30 m/s. The sea monster sends
out a sonar signal (sound) of frequency 1000 Hz. The signal received by the sub has a frequency of 98

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Sound Waves Solutions

QUESTION 22 Agiant sea monster chases a deep sea submarine near the bottom of the North Atlantic. The submarine is moving at 30 m/s. The sea monster sends out a sonar signal (sound) of frequency 1000 Hz. The signal received by the sub has a frequency of 985 Hz. The speed of sound in saltwater is 1530 m/s. a. Determine the speed of the sea monster b. and if the sub is in trouble (yes or no).

QUESTION 14
Which one of the following statements is true?
a. A dog whistle isn't loud enough for humans to hear.
b. The speed of a pulse sent up a rope hanging from the ceiling will decrease as the pulse rises.
C. A wave hitting a fixed boundary is not in

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Sound Waves Solutions

QUESTION 14 Which one of the following statements is true? a. A dog whistle isn't loud enough for humans to hear. b. The speed of a pulse sent up a rope hanging from the ceiling will decrease as the pulse rises. C. A wave hitting a fixed boundary is not inverted upon reflection. d. A seismic P-wave can propagate all the way through the earth.

QUESTION 11
Which one of the following does not involve the Doppler effect?
a.
a plane becomes louder as it approaches
b.
the change in the pitch of a train whistle as the train approaches and moves away
c. the radar systems used by police to monitor your

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Sound Waves Solutions

QUESTION 11 Which one of the following does not involve the Doppler effect? a. a plane becomes louder as it approaches b. the change in the pitch of a train whistle as the train approaches and moves away c. the radar systems used by police to monitor your speed d. a shift in apparent color of a star moving away from the earth

QUESTION 17
The intensity of a certain sound wave is 4x10-4 W/m2. If the intensity level of the sound increases by 30 dB, the intensity has increased to...
Ca. 1.2x10-2 W/m2
b.
14.0x10-2 W/m2
* 4.0x10-1 W/m2
d. 1.33x10-1 W/m2

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Sound Waves Solutions

QUESTION 17 The intensity of a certain sound wave is 4x10-4 W/m2. If the intensity level of the sound increases by 30 dB, the intensity has increased to... Ca. 1.2x10-2 W/m2 b. 14.0x10-2 W/m2 * 4.0x10-1 W/m2 d. 1.33x10-1 W/m2

QUESTION 5
Which one of the following would increase the speed of a sound wave in air?
a. increasing the temperature of the air
b.increasing the frequency of the sound wave
Cincreasing the intensity level of the sound wave
d. increasing the amplitude of th

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Sound Waves Solutions

QUESTION 5 Which one of the following would increase the speed of a sound wave in air? a. increasing the temperature of the air b.increasing the frequency of the sound wave Cincreasing the intensity level of the sound wave d. increasing the amplitude of the sound wave

webassign.net/Web/Stue ASSIMI RESPONSCJ) UL. UP
ssignment Submission & Scoring
ssignment Submission
For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change t

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webassign.net/Web/Stue ASSIMI RESPONSCJ) UL. UP ssignment Submission & Scoring ssignment Submission For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer. Assignment Scoring Your last submission is used for your score. MY NOTES ASK YOUR TEACHER 1. [-11 Points] DETAILS OSCOLPHYS2016 17.3.WA.020. Three physics students (Alice, Betty and Carol) are working together to solve problems. If Alice is talking 1.33 dB louder than Betty, and Carol is talking 2.97 dB louder than Alice, determine the ratio of the sound intensity of Carol to the sound intensity of Betty. (Assume the sound intensities of Carol and Betty are Ic and Is, respectively.) lo 18 Submit Assignment Save Assignment Progress My Assignments Request Extension hp

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DETAILS
OSCOLPHYS2016 16.6.WA.047.
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You

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O Mail - Monique Grifin - Outlook x Launch Meeting - Zoom p131hw16-phy131EJ-20215 webassign.net/web/Student/Assignment-Responses/last?dep=26775897 a Reading 4. [-70.2 Points) DETAILS OSCOLPHYS2016 16.6.WA.047. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You are playing an old 78.0 rpm album when you notice a small piece of lint on the record at a distance of 6.7 cm from the center of the turntable. Light coming in through the window (essentially parallel rays) casts a shadow of the lint on the wall behind the turntable. Determine the maximum speed of the lint's shadow on the wall. Y m/s Additional Materials Reading Submit Answer 5. [-70.2 Points) DETAILS OSCOLPHYS2016 16.9.WA.053. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Transverse waves traveling along a string have the following properties. Amplitude of the wave = 2.1 mm Wavelength of the wave = 0.15 m Speed of the wave = 408 m/s Determine the time for the transverse displacement to travel through a total distance of 1.5 km. s Additional Materials Reading

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