Question 1

The density of aluminum is 2700 kg/m3.If transverse waves propagate at 3.If transverse waves propagate at   in a   aluminum wire,what is the tension on the wire? A)  52 N B)  31 N C)  42 N D)  62 N" class="answers-bank-image d-inline" rel="preload" > in a 3.If transverse waves propagate at   in a   aluminum wire,what is the tension on the wire? A)  52 N B)  31 N C)  42 N D)  62 N" class="answers-bank-image d-inline" rel="preload" > aluminum wire,what is the tension on the wire?

Accepted Answer

A)   52 N
B)   31 N
C)   42 N
D)   62 NE) A) and B)
F) C) and D)

Question 2

Ocean tides are waves that have a period of 12 hours,an amplitude (in some places) of 1.50 m,and a speed of 750 km/hr.What is the distance between adjacent crests of these waves?

Accepted Answer

A)   9000 km
B)   32,400 km
C)   9000 m
D)   32,400 m
E)   2500 mF) D) and E)
G) B) and D)

Question 3

A 6.00-m long rope is under a tension of 600 N.Waves travel along this rope at 40.0 m/s.What is the mass of the rope?

Accepted Answer

A)   1.00 kg
B)   1.25 kg
C)   2.25 kg
D)   2.50 kg
E)   1.12 kgF) A) and E)
G) A) and D)

Question 4

The figure shows the displacement y of a traveling wave at a given position as a function of time and the displacement of the same wave at a given time as a function of position.How fast is the wave traveling?

Accepted Answer

A)   3.0 m/s
B)   0.75 m/s
C)   0.66 m/s
D)   1.5 m/s
E)   2.0 m/sF) All of the above
G) D) and E)

Question 5

A 1.0-g string that is 0.64 m long is fixed at both ends and is under tension.This string produces a 100-Hz tone when it vibrates in the third harmonic.The speed of sound in air is 344 m/s.The tension in the string,in is closest to

Accepted Answer

A)   2.8 N.
B)   2.3 N.
C)   1.8 N.
D)   3.4 N.
E)   3.9 N.F) C) and D)
G) A) and B)

Question 6

Consider the waves on a vibrating guitar string and the sound waves the guitar produces in the surrounding air.The string waves and the sound waves must have the same

Accepted Answer

A)   wavelength.
B)   velocity.
C)   frequency.
D)   amplitude.
E)   More than one of the above is true.F) D) and E)
G) C) and D)

Question 7

A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long.When you gently pluck the upper end of the wire,a pulse travels down the wire and returns 7.84 ms later,having reflected off the lower end.The speed of sound in the room is 344 m/s,and the stone is heavy enough to prevent the lower end of the wire from moving.If the wire is vibrating in its second overtone,what is the frequency of the sound it will produce?

Accepted Answer

A)   128 Hz
B)   191 Hz
C)   255 Hz
D)   383 Hz
E)   765 HzF) A) and E)
G) B) and D)

Question 8

A tube open at one end and closed at the other end produces sound having a fundamental frequency of 350 Hz.If you now open the closed end,the fundamental frequency becomes

Accepted Answer

A)   87.5 Hz.
B)   175 Hz.
C)   350 Hz.
D)   700 Hz.
E)   1400 Hz.F) A) and B)
G) A) and C)

Question 9

Standing waves of frequency 57 Hz are produced on a string that has mass per unit length  .With what tension must the string be stretched between two supports if adjacent nodes in the standing wave are to be 0.71 meters apart?

Accepted Answer

The answer of Standing waves of frequency 57 Hz are...

Question 10

Four traveling waves are described by the following equations,where all quantities are measured in SI units and y represents the displacement. I: y = 0.12 cos(3x + 2t) 
II: y = 0.15 sin(6x - 3t) 
III: y = 0.23 cos(3x + 6t) 
IV: y = -0.29 sin(1.5x - t) 
Which of these waves have the same speed?

Accepted Answer

A)   I and III
B)   I and IV
C)   II and III
D)   I and II
E)   III and IVF) A) and D)
G) A) and B)

Question 11

A wave pulse traveling to the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier.What is the orientation of the reflected and transmitted pulses?

Accepted Answer

A)   Both pulses are right side up.
B)   The reflected pulse returns right side up while the transmitted pulse is inverted.
C)   The reflected pulse returns inverted while the transmitted pulse is right side up.
D)   Both pulses are inverted.E) A) and B)
F) B) and C)

Question 12

A transverse wave is traveling on a string stretched along the horizontal x-axis.The equation for the vertical displacement y of the string is given by  ,where all quantities are in SI units.The maximum speed of a particle of the string is closest to

Accepted Answer

A)   0.33 m/s.
B)   0.43 m/s.
C)   0.53 m/s.
D)   0.64 m/s.
E)   0.74 m/s.F) A) and B)
G) A) and D)

Question 13

Waves travel along a 100-m length of string which has a mass of  and is held taut with a tension of  .What is the speed of the waves?

Accepted Answer

A)   3700 m/s
B)   370 m/s
C)   37 m/s
D)   0.37 m/s
E)   3.7 m/sF) C) and D)
G) B) and E)

Question 14

A 2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kN.What is the frequency of the fundamental mode of vibration of this wire?

Accepted Answer

A)   204 Hz
B)   102 Hz
C)   408 Hz
D)   510 Hz
E)   153 HzF) A) and C)
G) None of the above

Question 15

For the wave shown in the figure,the wavelength is

Accepted Answer

A)   8 m.
B)   4 m.
C)   2 m.
D)   1 m.
E)   unable to be determined from the given information.F) A) and D)
G) A) and C)

Question 16

The vertical displacement y(x,t)of a string stretched along the horizontal x-axis is given by  .
(a)What is the minimum time for each complete cycle of the wave?
(b)What is the distance between adjacent crests of the wave?
(c)How fast does this wave travel?

Accepted Answer

(a)0.870 s...

Question 17

A platinum wire that is 1.20 m long has a radius of 0.500 mm and is fixed at both ends.In its third harmonic it vibrates at 512 Hz.The density of platinum is 21.4 × 103 kg/m3.What is the tension in the wire?

Accepted Answer

A)   4.00 kN
B)   2.00 kN
C)   2.82 kN
D)   1.41 kN
E)   1.00 kNF) C) and E)
G) A) and D)

Question 18

A 6.0-m wire with a mass of 50 g,is under tension.A transverse wave,for which the frequency is 810 Hz,the wavelength is 0.40 m,and the amplitude is 4.0 mm,is propagating on the wire.The time for a crest of this wave to travel the length of the wire is closest to

Accepted Answer

A)   19 ms.
B)   16 ms.
C)   21 ms.
D)   23 ms.
E)   25 ms.F) A) and D)
G) C) and D)

Question 19

Calculate the light intensity 1.51 m from a light bulb that emits 100 W of visible light,assuming that the light radiates uniformly in all directions.

Accepted Answer

A)   3.49 W/m2
B)   4.01 W/m2
C)   43.9 W/m2
D)   50.5 W/m2E) A) and D)
F) C) and D)

Question 20

A 2.0-m string is fixed at both ends and tightened until the wave speed is  What is the frequency of the standing wave shown in the figure?

Accepted Answer

A)   120 Hz
B)   230 Hz
C)   350 Hz
D)   470 HzE) B) and D)
F) B) and C)

Exam 15: Mechanical Waves

The density of aluminum is 2700 kg/m³.If transverse waves propagate at in a aluminum wire,what is the tension on the wire?

Correct Answer
verified

A 2.0-m string is fixed at both ends and tightened until the wave speed is What is the frequency of the standing wave shown in the figure?

Correct Answer
verified

The vertical displacement y(x,t)of a string stretched along the horizontal x-axis is given by . (a)What is the minimum time for each complete cycle of the wave? (b)What is the distance between adjacent crests of the wave? (c)How fast does this wave travel?

Correct Answer
verified
(a)0.870 s...
View Answer

Ocean tides are waves that have a period of 12 hours,an amplitude (in some places) of 1.50 m,and a speed of 750 km/hr.What is the distance between adjacent crests of these waves?

Correct Answer
verified

A platinum wire that is 1.20 m long has a radius of 0.500 mm and is fixed at both ends.In its third harmonic it vibrates at 512 Hz.The density of platinum is 21.4 × 10³ kg/m³.What is the tension in the wire?

Correct Answer
verified

The figure shows the displacement y of a traveling wave at a given position as a function of time and the displacement of the same wave at a given time as a function of position.How fast is the wave traveling?

Correct Answer
verified

A 2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kN.What is the frequency of the fundamental mode of vibration of this wire?

Correct Answer
verified

A 6.00-m long rope is under a tension of 600 N.Waves travel along this rope at 40.0 m/s.What is the mass of the rope?

Correct Answer
verified

For the wave shown in the figure,the wavelength is

Correct Answer
verified

Calculate the light intensity 1.51 m from a light bulb that emits 100 W of visible light,assuming that the light radiates uniformly in all directions.

Correct Answer
verified

A 6.0-m wire with a mass of 50 g,is under tension.A transverse wave,for which the frequency is 810 Hz,the wavelength is 0.40 m,and the amplitude is 4.0 mm,is propagating on the wire.The time for a crest of this wave to travel the length of the wire is closest to

Correct Answer
verified

A tube open at one end and closed at the other end produces sound having a fundamental frequency of 350 Hz.If you now open the closed end,the fundamental frequency becomes

Correct Answer
verified

A 1.0-g string that is 0.64 m long is fixed at both ends and is under tension.This string produces a 100-Hz tone when it vibrates in the third harmonic.The speed of sound in air is 344 m/s.The tension in the string,in is closest to

Correct Answer
verified

Four traveling waves are described by the following equations,where all quantities are measured in SI units and y represents the displacement. I: y = 0.12 cos(3x + 2t) II: y = 0.15 sin(6x - 3t) III: y = 0.23 cos(3x + 6t) IV: y = -0.29 sin(1.5x - t) Which of these waves have the same speed?

Correct Answer
verified

Standing waves of frequency 57 Hz are produced on a string that has mass per unit length .With what tension must the string be stretched between two supports if adjacent nodes in the standing wave are to be 0.71 meters apart?

Correct Answer
verified

Waves travel along a 100-m length of string which has a mass of and is held taut with a tension of .What is the speed of the waves?

Correct Answer
verified

Consider the waves on a vibrating guitar string and the sound waves the guitar produces in the surrounding air.The string waves and the sound waves must have the same

Correct Answer
verified

Correct Answer
verified

A transverse wave is traveling on a string stretched along the horizontal x-axis.The equation for the vertical displacement y of the string is given by ,where all quantities are in SI units.The maximum speed of a particle of the string is closest to

Correct Answer
verified

A wave pulse traveling to the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier.What is the orientation of the reflected and transmitted pulses?

Correct Answer
verified

Exam 15: Mechanical Waves

The density of aluminum is 2700 kg/m3.If transverse waves propagate at in a aluminum wire,what is the tension on the wire?

Correct AnswerverifiedShow Answer

A 2.0-m string is fixed at both ends and tightened until the wave speed is What is the frequency of the standing wave shown in the figure?

Correct AnswerverifiedShow Answer

The vertical displacement y(x,t)of a string stretched along the horizontal x-axis is given by . (a)What is the minimum time for each complete cycle of the wave? (b)What is the distance between adjacent crests of the wave? (c)How fast does this wave travel?

Correct Answerverified(a)0.870 s...View AnswerShow Answer

Ocean tides are waves that have a period of 12 hours,an amplitude (in some places) of 1.50 m,and a speed of 750 km/hr.What is the distance between adjacent crests of these waves?

Correct AnswerverifiedShow Answer

A platinum wire that is 1.20 m long has a radius of 0.500 mm and is fixed at both ends.In its third harmonic it vibrates at 512 Hz.The density of platinum is 21.4 × 103 kg/m3.What is the tension in the wire?

Correct AnswerverifiedShow Answer

The figure shows the displacement y of a traveling wave at a given position as a function of time and the displacement of the same wave at a given time as a function of position.How fast is the wave traveling?

Correct AnswerverifiedShow Answer

A 2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kN.What is the frequency of the fundamental mode of vibration of this wire?

Correct AnswerverifiedShow Answer

A 6.00-m long rope is under a tension of 600 N.Waves travel along this rope at 40.0 m/s.What is the mass of the rope?

Correct AnswerverifiedShow Answer

For the wave shown in the figure,the wavelength is

Correct AnswerverifiedShow Answer

Calculate the light intensity 1.51 m from a light bulb that emits 100 W of visible light,assuming that the light radiates uniformly in all directions.

Correct AnswerverifiedShow Answer

A 6.0-m wire with a mass of 50 g,is under tension.A transverse wave,for which the frequency is 810 Hz,the wavelength is 0.40 m,and the amplitude is 4.0 mm,is propagating on the wire.The time for a crest of this wave to travel the length of the wire is closest to

Correct AnswerverifiedShow Answer

A tube open at one end and closed at the other end produces sound having a fundamental frequency of 350 Hz.If you now open the closed end,the fundamental frequency becomes

Correct AnswerverifiedShow Answer

A 1.0-g string that is 0.64 m long is fixed at both ends and is under tension.This string produces a 100-Hz tone when it vibrates in the third harmonic.The speed of sound in air is 344 m/s.The tension in the string,in is closest to

Correct AnswerverifiedShow Answer

Four traveling waves are described by the following equations,where all quantities are measured in SI units and y represents the displacement. I: y = 0.12 cos(3x + 2t) II: y = 0.15 sin(6x - 3t) III: y = 0.23 cos(3x + 6t) IV: y = -0.29 sin(1.5x - t) Which of these waves have the same speed?

Correct AnswerverifiedShow Answer

Standing waves of frequency 57 Hz are produced on a string that has mass per unit length .With what tension must the string be stretched between two supports if adjacent nodes in the standing wave are to be 0.71 meters apart?

Correct AnswerverifiedShow Answer

Waves travel along a 100-m length of string which has a mass of and is held taut with a tension of .What is the speed of the waves?

Correct AnswerverifiedShow Answer

Consider the waves on a vibrating guitar string and the sound waves the guitar produces in the surrounding air.The string waves and the sound waves must have the same

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A transverse wave is traveling on a string stretched along the horizontal x-axis.The equation for the vertical displacement y of the string is given by ,where all quantities are in SI units.The maximum speed of a particle of the string is closest to

Correct AnswerverifiedShow Answer

A wave pulse traveling to the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier.What is the orientation of the reflected and transmitted pulses?

Correct AnswerverifiedShow Answer

The density of aluminum is 2700 kg/m³.If transverse waves propagate at in a aluminum wire,what is the tension on the wire?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
(a)0.870 s...
View Answer

Correct Answer
verified

A platinum wire that is 1.20 m long has a radius of 0.500 mm and is fixed at both ends.In its third harmonic it vibrates at 512 Hz.The density of platinum is 21.4 × 10³ kg/m³.What is the tension in the wire?

Correct Answer
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