Question 1

The fundamental frequency of a violin string is 440 hertz.The frequency of its second harmonic is

Accepted Answer

A) 220 hertz. 
B) 440 hertz. 
C) 880 hertz. 
D) none of the above 
A) 220 hertz. 
B) 440 hertz. 
C) 880 hertz. 
D) none of the above C

Question 2

A standing wave can occur when

Accepted Answer

A) two waves overlap. 
B) a wave reflects upon itself. 
C) the speed of the wave is zero or near zero. 
D) the amplitude of a wave exceeds its wavelength. 
A) two waves overlap. 
B) a wave reflects upon itself. 
C) the speed of the wave is zero or near zero. 
D) the amplitude of a wave exceeds its wavelength. B

Question 3

An electric razor in Europe completes 50 vibrations in 1 s.The frequency of these vibrations is

Accepted Answer

A) 50 Hz with a period of 1/50 s. 
B) 1/50 Hz with a period of 50 s. 
C) 50 Hz with a period of 50 s. 
D) 1/50 Hz with a period of 1/50 s. 
A) 50 Hz with a period of 1/50 s. 
B) 1/50 Hz with a period of 50 s. 
C) 50 Hz with a period of 50 s. 
D) 1/50 Hz with a period of 1/50 s. A

Question 4

A wave travels an average distance of 6 m in 0.5 s.What is the wave's average velocity?

Accepted Answer

A) less than 0.2 m/s 
B) 1 m/s 
C) 3 m/s 
D) 6 m/s 
E) more than 6 m/s 
A) less than 0.2 m/s 
B) 1 m/s 
C) 3 m/s 
D) 6 m/s 
E) more than 6 m/s

Question 5

Suppose you sound a 1056-Hz tuning fork when you strike a note on the piano and hear 2 beats/second.You tighten the piano string very slightly and now hear 3 beats/second.What is the frequency of the piano string?

Accepted Answer

A) 1053 Hz 
B) 1054 Hz 
C) 1056 Hz 
D) 1058 Hz 
E) 1059 Hz 
A) 1053 Hz 
B) 1054 Hz 
C) 1056 Hz 
D) 1058 Hz 
E) 1059 Hz

Question 6

Standing waves of sound are employed in a

Accepted Answer

A) guitar. 
B) flute. 
C) clarinet. 
D) all of the above 
E) none of the above 
A) guitar. 
B) flute. 
C) clarinet. 
D) all of the above 
E) none of the above

Question 7

A shock wave is produced when the speed of an object

Accepted Answer

A) matches the speed of sound in air. 
B) exceeds the speed of sound in air. 
C) greatly increases in amplitude. 
D) none of the above 
A) matches the speed of sound in air. 
B) exceeds the speed of sound in air. 
C) greatly increases in amplitude. 
D) none of the above

Question 8

Two tuning forks produce sounds of wavelengths 3.4 m and 3.3 m.Assuming the speed of sound is 340 m/s,the beat frequency produced is

Accepted Answer

A) 0.1 Hz. 
B) 1.0 Hz. 
C) 2.0 Hz. 
D) 3.0 Hz. 
E) 4.0 Hz. 
A) 0.1 Hz. 
B) 1.0 Hz. 
C) 2.0 Hz. 
D) 3.0 Hz. 
E) 4.0 Hz.

Question 9

The explanation for all types of refraction involves a change in

Accepted Answer

A) frequency. 
B) period. 
C) speed. 
D) all of the above 
E) none of the above 
A) frequency. 
B) period. 
C) speed. 
D) all of the above 
E) none of the above

Question 10

Sound travels faster in

Accepted Answer

A) air. 
B) water. 
C) steel. 
D) a vacuum. 
E) same in each 
A) air. 
B) water. 
C) steel. 
D) a vacuum. 
E) same in each

Question 11

Fourier discovered that music can be

Accepted Answer

A) a series of non-periodic waves. 
B) reduced to simple sine waves. 
C) a binary code. 
D) pulses of the same amplitude. 
A) a series of non-periodic waves. 
B) reduced to simple sine waves. 
C) a binary code. 
D) pulses of the same amplitude.

Question 12

When sound waves superimpose they can interfere

Accepted Answer

A) constructively. 
B) destructively. 
C) either of these 
D) neither of these 
A) constructively. 
B) destructively. 
C) either of these 
D) neither of these

Question 13

The pitch of a musical sound is most related to

Accepted Answer

A) wavelength. 
B) frequency. 
C) speed. 
D) amplitude. 
E) all of the above 
A) wavelength. 
B) frequency. 
C) speed. 
D) amplitude. 
E) all of the above

Question 14

Sound travels faster when the air is

Accepted Answer

A) warm. 
B) cold. 
C) neither of these 
A) warm. 
B) cold. 
C) neither of these

Question 15

Radio waves travel at the speed of light,300,000 km/s.The wavelength of a radio wave received at 100 MHz is

Accepted Answer

A) 0.3 m. 
B) 3.0 m. 
C) 30 m. 
D) 300 m. 
E) none of the above 
A) 0.3 m. 
B) 3.0 m. 
C) 30 m. 
D) 300 m. 
E) none of the above

Question 16

Loudness of sound is most closely related to

Accepted Answer

A) frequency. 
B) wavelength. 
C) amplitude. 
D) speed. 
A) frequency. 
B) wavelength. 
C) amplitude. 
D) speed.

Question 17

A mass on the end of a spring bobs up and down 1 complete cycle every 2 s.Its frequency is

Accepted Answer

A) 0.5 Hz. 
B) 2 Hz. 
C) neither of these 
A) 0.5 Hz. 
B) 2 Hz. 
C) neither of these

Question 18

Identical waves superimposed in phase produce a wave of increased

Accepted Answer

A) amplitude. 
B) frequency. 
C) wavelength. 
D) all of the above 
E) none of the above 
A) amplitude. 
B) frequency. 
C) wavelength. 
D) all of the above 
E) none of the above

Question 19

A mass suspended from a spring bobs up and down one complete cycle every 2 s.Its period is

Accepted Answer

A) 0.5 s. 
B) 1 s. 
C) 2 s. 
D) none of the above 
A) 0.5 s. 
B) 1 s. 
C) 2 s. 
D) none of the above

Question 20

The compressions and rarefactions in a longitudinal wave travel in

Accepted Answer

A) the same direction. 
B) opposite directions. 
C) neither of these 
A) the same direction. 
B) opposite directions. 
C) neither of these

Exam 10: Waves and Sound

The fundamental frequency of a violin string is 440 hertz.The frequency of its second harmonic is

A standing wave can occur when

An electric razor in Europe completes 50 vibrations in 1 s.The frequency of these vibrations is

A wave travels an average distance of 6 m in 0.5 s.What is the wave's average velocity?

Suppose you sound a 1056-Hz tuning fork when you strike a note on the piano and hear 2 beats/second.You tighten the piano string very slightly and now hear 3 beats/second.What is the frequency of the piano string?

Standing waves of sound are employed in a

A shock wave is produced when the speed of an object

Two tuning forks produce sounds of wavelengths 3.4 m and 3.3 m.Assuming the speed of sound is 340 m/s,the beat frequency produced is

The explanation for all types of refraction involves a change in

Sound travels faster in

Fourier discovered that music can be

When sound waves superimpose they can interfere

The pitch of a musical sound is most related to

Sound travels faster when the air is

Radio waves travel at the speed of light,300,000 km/s.The wavelength of a radio wave received at 100 MHz is

Loudness of sound is most closely related to

A mass on the end of a spring bobs up and down 1 complete cycle every 2 s.Its frequency is

Identical waves superimposed in phase produce a wave of increased

A mass suspended from a spring bobs up and down one complete cycle every 2 s.Its period is

The compressions and rarefactions in a longitudinal wave travel in

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

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