Transcript Document 7368237

Halliday/Resnick/Walker
Fundamentals of Physics 8th edition
Classroom Response System Questions
Chapter 16 Waves I
Reading Quiz Questions
16.2.1. According to the text, waves are of three main types. Which of
the following choices correctly lists these three main types?
a) mechanical, sound, and light waves
b) mechanical, electromagnetic, and matter waves
c) transverse, sound, and matter waves
d) longitudinal, electromagnetic, and sound waves
e) simple harmonic, light, and matter waves
16.2.1. According to the text, waves are of three main types. Which of
the following choices correctly lists these three main types?
a) mechanical, sound, and light waves
b) mechanical, electromagnetic, and matter waves
c) transverse, sound, and matter waves
d) longitudinal, electromagnetic, and sound waves
e) simple harmonic, light, and matter waves
16.2.2. What type of waves are composed of electrons, protons, and
other fundamental particles?
a) electromagnetic
b) longitudinal
c) nuclear resonant
d) matter
e) nanotrophic
16.2.2. What type of waves are composed of electrons, protons, and
other fundamental particles?
a) electromagnetic
b) longitudinal
c) nuclear resonant
d) matter
e) nanotrophic
16.3.1. Which one of the following types of waves is purely
longitudinal?
a) light traveling through vacuum
b) waves on a plucked guitar string
c) radio waves traveling through air
d) sound waves emitted from a speaker
e) surface waves on the surface of a shallow pond
16.3.1. Which one of the following types of waves is purely
longitudinal?
a) light traveling through vacuum
b) waves on a plucked guitar string
c) radio waves traveling through air
d) sound waves emitted from a speaker
e) surface waves on the surface of a shallow pond
16.3.2. Which one of the following statements concerning transverse
waves is true?
a) The direction of the disturbance is parallel to the direction of travel.
b) The direction of the disturbance is perpendicular to the direction of
travel.
c) A sound wave is an example of a transverse wave.
d) Transverse waves are not periodic waves.
e) Transverse waves always travel at the speed of light.
16.3.2. Which one of the following statements concerning transverse
waves is true?
a) The direction of the disturbance is parallel to the direction of travel.
b) The direction of the disturbance is perpendicular to the direction of
travel.
c) A sound wave is an example of a transverse wave.
d) Transverse waves are not periodic waves.
e) Transverse waves always travel at the speed of light.
16.3.3. A sound wave is an example of what type of wave?
a) longitudinal wave
b) electromagnetic wave
c) matter wave
d) transverse wave
e) seismic wave
16.3.3. A sound wave is an example of what type of wave?
a) longitudinal wave
b) electromagnetic wave
c) matter wave
d) transverse wave
e) seismic wave
16.4.1. Which one of the following expressions determines the angular
wave number?
a) k  n

b) k 
2
c) k 
2


d) k  n

k
e)
n
16.4.1. Which one of the following expressions determines the angular
wave number?
a) k  n

b) k 
2
c) k 
2


d) k  n

k
e)
n
16.4.2. The graph shows the vertical displacement as a function of
time at one location in a medium through which a wave is
traveling. What is the amplitude of the wave?
a) 1 m
b) 2 m
c) 4 m
d) 6 m
e) 8 m
16.4.2. The graph shows the vertical displacement as a function of
time at one location in a medium through which a wave is
traveling. What is the amplitude of the wave?
a) 1 m
b) 2 m
c) 4 m
d) 6 m
e) 8 m
16.4.3. The graph shows the vertical displacement as a function of
time at one location in a medium through which a wave is
traveling. What is the period of the wave?
a) 0.5 s
b) 1.0 s
c) 1.5 s
d) 2.0 s
e) 4.0 s
16.4.3. The graph shows the vertical displacement as a function of
time at one location in a medium through which a wave is
traveling. What is the period of the wave?
a) 0.5 s
b) 1.0 s
c) 1.5 s
d) 2.0 s
e) 4.0 s
16.5.1. Which one of the following factors is important in determining
the speed of waves on a string?
a) amplitude
b) frequency
c) length of the string
d) mass per unit length
e) speed of the particles that compose the string
16.5.1. Which one of the following factors is important in determining
the speed of waves on a string?
a) amplitude
b) frequency
c) length of the string
d) mass per unit length
e) speed of the particles that compose the string
16.5.2. Consider the three waves described by the equations below. Which wave(s)
is moving in the negative x direction?
a) A only
b) B only
c) C only
d) A and B
e) B and C
16.5.2. Consider the three waves described by the equations below. Which wave(s)
is moving in the negative x direction?
a) A only
b) B only
c) C only
d) A and B
e) B and C
16.5.3. Which one of the following statements concerning the
equations used to describe waves is false?
a) The equation assumes that y = 0 m and x = 0 m at time t = 0 s.
b) When a calculator is used to calculate the sine function, it must be
set in radian mode.
c) The wave equations may be used to describe both longitudinal and
transverse waves.
d) The equation includes the amplitude, frequency, and wavelength of
the waves.
e) The term (kx  t) is called the group velocity of the wave.
16.5.3. Which one of the following statements concerning the
equations used to describe waves is false?
a) The equation assumes that y = 0 m and x = 0 m at time t = 0 s.
b) When a calculator is used to calculate the sine function, it must be
set in radian mode.
c) The wave equations may be used to describe both longitudinal and
transverse waves.
d) The equation includes the amplitude, frequency, and wavelength of
the waves.
e) The term (kx  t) is called the group velocity of the wave.
16.6.1. A wave moves at a constant speed along a string. Which one of the
following statements is false concerning the motion of particles in the
string?
a) The particle speed is constant.
b) The particle speed depends on the amplitude of the periodic motion of the
source.
c) The particle speed is independent of the tension and linear density of the
string.
d) The particle speed is not the same as the wave speed.
e) The particle speed depends on the frequency of the periodic motion of the
source.
16.6.1. A wave moves at a constant speed along a string. Which one of the
following statements is false concerning the motion of particles in the
string?
a) The particle speed is constant.
b) The particle speed depends on the amplitude of the periodic motion of the
source.
c) The particle speed is independent of the tension and linear density of the
string.
d) The particle speed is not the same as the wave speed.
e) The particle speed depends on the frequency of the periodic motion of the
source.
16.6.2. Which one of the following statements concerning waves is
false?
a) A wave carries energy from one place to another.
b) A wave is a disturbance that travels from one place to another.
c) The disturbance of particles of a medium may be in a direction that
is perpendicular to the direction the wave is traveling.
d) Sound waves are purely longitudinal waves.
e) A wave carries particles of its medium from one place to another.
16.6.2. Which one of the following statements concerning waves is
false?
a) A wave carries energy from one place to another.
b) A wave is a disturbance that travels from one place to another.
c) The disturbance of particles of a medium may be in a direction that
is perpendicular to the direction the wave is traveling.
d) Sound waves are purely longitudinal waves.
e) A wave carries particles of its medium from one place to another.
16.6.3. Which of the following properties of a wave on a string do not
change when the tension of a string is increased?
a) frequency
b) average transmitted power
c) speed of the wave
d) first harmonic frequency
e) all of the above will change
16.6.3. Which of the following properties of a wave on a string do not
change when the tension of a string is increased?
a) frequency
b) average transmitted power
c) speed of the wave
d) first harmonic frequency
e) all of the above will change
16.6.4. A piano is tuned by tightening or loosing the piano wires.
When the wires are tightened, how is speed of the waves on the
wire affected, if at all?
a) The speed is increased.
b) The speed is reduced.
c) The speed remains the same.
16.6.4. A piano is tuned by tightening or loosing the piano wires.
When the wires are tightened, how is speed of the waves on the
wire affected, if at all?
a) The speed is increased.
b) The speed is reduced.
c) The speed remains the same.
16.6.5. A piano is tuned by tightening or loosing the piano wires.
When the wires are tightened, how is frequency of the waves on
the wire affected, if at all?
a) The frequency is increased.
b) The frequency is reduced.
c) The frequency remains the same.
16.6.5. A piano is tuned by tightening or loosing the piano wires.
When the wires are tightened, how is frequency of the waves on
the wire affected, if at all?
a) The frequency is increased.
b) The frequency is reduced.
c) The frequency remains the same.
16.9.1. When two or more waves are present simultaneously at the
same place, the resultant disturbance is the sum of the disturbances
from the individual waves. What principle or law makes this
statement?
a) Principle of Phase Construction
b) Principle of Linear Superposition
c) Law of Cosines
d) Huygens’ Principle
e) Law of Overlapping Waves
16.9.1. When two or more waves are present simultaneously at the
same place, the resultant disturbance is the sum of the disturbances
from the individual waves. What principle or law makes this
statement?
a) Principle of Phase Construction
b) Principle of Linear Superposition
c) Law of Cosines
d) Huygens’ Principle
e) Law of Overlapping Waves
16.9.2. Complete the following sentence: The Principle of Linear
Superposition may
a) not be applied to longitudinal waves.
b) not be applied to transverse waves.
c) not be applied to electromagnetic waves.
d) be applied to all types waves.
e) be applied only when a wave reflects from a surface.
16.9.2. Complete the following sentence: The Principle of Linear
Superposition may
a) not be applied to longitudinal waves.
b) not be applied to transverse waves.
c) not be applied to electromagnetic waves.
d) be applied to all types waves.
e) be applied only when a wave reflects from a surface.
16.9.3. According to the Principle of Superposition, how are two
waves combined to produce a resultant wave?
a) The velocity vectors are added together.
b) The amplitudes of the two waves are added algebraically.
c) The amplitudes of the two waves are multiplied together.
d) Waves are always independent of each other and cannot be
combined.
16.9.3. According to the Principle of Superposition, how are two
waves combined to produce a resultant wave?
a) The velocity vectors are added together.
b) The amplitudes of the two waves are added algebraically.
c) The amplitudes of the two waves are multiplied together.
d) Waves are always independent of each other and cannot be
combined.
16.9.4. Two waves traveling in the same direction produce a resultant
wave traveling in the same direction if which of the following
conditions are met?
a) The amplitudes of the two waves are identical.
b) The wavelengths of the two waves are identical.
c) The velocities of the two waves are identical.
d) Both the amplitudes and wavelengths for the two waves are
identical.
e) Both waves can be described as sine waves.
16.9.4. Two waves traveling in the same direction produce a resultant
wave traveling in the same direction if which of the following
conditions are met?
a) The amplitudes of the two waves are identical.
b) The wavelengths of the two waves are identical.
c) The velocities of the two waves are identical.
d) Both the amplitudes and wavelengths for the two waves are
identical.
e) Both waves can be described as sine waves.
16.10.1. Wave A has an amplitude of 0.5 m and wave B has an amplitude of 0.6 m.
When waves A and B travel toward each other, the observed wave amplitude at a
certain location and particular time is 0.9 m. Which of the following statements
concerning this observation is true?
a) This was an observation in error, since the superposition of these two waves cannot
result in an amplitude larger than 0.6 m.
b) This was an observation in error, since the superposition of two these two waves will
always result in an amplitude of 1.1 m.
c) This is an example of the superposition of two waves resulting in exactly in phase
interference.
d) This is an example of the superposition of two waves resulting in destructive
interference.
e) This is an example of the superposition of two waves resulting in constructive
interference.
16.10.1. Wave A has an amplitude of 0.5 m and wave B has an amplitude of 0.6 m.
When waves A and B travel toward each other, the observed wave amplitude at a
certain location and particular time is 0.9 m. Which of the following statements
concerning this observation is true?
a) This was an observation in error, since the superposition of these two waves cannot
result in an amplitude larger than 0.6 m.
b) This was an observation in error, since the superposition of two these two waves will
always result in an amplitude of 1.1 m.
c) This is an example of the superposition of two waves resulting in exactly in phase
interference.
d) This is an example of the superposition of two waves resulting in destructive
interference.
e) This is an example of the superposition of two waves resulting in constructive
interference.
16.11.1. Complete the following sentence: Phasors are used to
combine waves that have differing
a) amplitudes
b) wave number
c) wavelength
d) frequency
e) nodes
16.11.1. Complete the following sentence: Phasors are used to
combine waves that have differing
a) amplitudes
b) wave number
c) wavelength
d) frequency
e) nodes
16.11.2. What will occur in the superposition of two identical sine
waves if they are shifted by (5/2) relative to one another?
a) The waves will interfere with each other destructively.
b) The waves will interfere with each other constructively.
c) The waves will travel in opposite directions.
d) One wave will travel faster than the other, but in the same
direction.
e) Since the waves are out of phase, they do not interfere with each
other.
16.11.2. What will occur in the superposition of two identical sine
waves if they are shifted by (5/2) relative to one another?
a) The waves will interfere with each other destructively.
b) The waves will interfere with each other constructively.
c) The waves will travel in opposite directions.
d) One wave will travel faster than the other, but in the same
direction.
e) Since the waves are out of phase, they do not interfere with each
other.
16.12.1. A string has one end attached to a wall and the other end attached to a
motor that moves the end up and down in simple harmonic motion. The
frequency of the motor is varied until a transverse standing wave is
produced on the string that has four nodes. Which of the following
statements concerning this situation is false?
a) This standing wave has three antinodes.
b) This standing wave is produced by linear superposition of identical waves
traveling in opposite directions.
c) This standing wave represents the third overtone.
d) This standing wave represents the third harmonic.
e) This standing wave occurs at a frequency that is 1.5 times greater than the
frequency where a standing wave with three nodes is observed.
16.12.1. A string has one end attached to a wall and the other end attached to a
motor that moves the end up and down in simple harmonic motion. The
frequency of the motor is varied until a transverse standing wave is
produced on the string that has four nodes. Which of the following
statements concerning this situation is false?
a) This standing wave has three antinodes.
b) This standing wave is produced by linear superposition of identical waves
traveling in opposite directions.
c) This standing wave represents the third overtone.
d) This standing wave represents the third harmonic.
e) This standing wave occurs at a frequency that is 1.5 times greater than the
frequency where a standing wave with three nodes is observed.
16.12.2. What is the distance between two successive antinodes of a
standing wave?
a) one-forth wavelength
b) one-half wavelength
c) one wavelength
d) two wavelengths
e) four wavelengths
16.12.2. What is the distance between two successive antinodes of a
standing wave?
a) one-forth wavelength
b) one-half wavelength
c) one wavelength
d) two wavelengths
e) four wavelengths
16.12.3. What occurs when a wave traveling along a taut string
reaches a fixed end where it has been tied to a wall?
a) The wave reflects back with the same amplitude, but with opposite
sign.
b) The wave reflects back with the same amplitude and sign.
c) The wave is absorbed by the wall.
d) The wave reflects back with smaller amplitude and same sign.
e) The wave reflects back with larger amplitude, but with opposite
sign.
16.12.3. What occurs when a wave traveling along a taut string
reaches a fixed end where it has been tied to a wall?
a) The wave reflects back with the same amplitude, but with opposite
sign.
b) The wave reflects back with the same amplitude and sign.
c) The wave is absorbed by the wall.
d) The wave reflects back with smaller amplitude and same sign.
e) The wave reflects back with larger amplitude, but with opposite
sign.
16.12.4. A standing wave is set up on a taut string. Which of the
following are not observed to move along the string?
a) nodes
b) antinodes
c) nodes and antinodes
d) Both nodes and antinodes can be observed moving along the string.
e) Nodes and antinodes can be observed switching positions at the
natural frequency of the string.
16.12.4. A standing wave is set up on a taut string. Which of the
following are not observed to move along the string?
a) nodes
b) antinodes
c) nodes and antinodes
d) Both nodes and antinodes can be observed moving along the string.
e) Nodes and antinodes can be observed switching positions at the
natural frequency of the string.
16.13.1. Which one of the following quantities is not a factor in
determining the natural frequency of a string fixed at its two ends?
a) length
b) mass
c) tension
d) acceleration due to gravity
16.13.1. Which one of the following quantities is not a factor in
determining the natural frequency of a string fixed at its two ends?
a) length
b) mass
c) tension
d) acceleration due to gravity