Business Communication 16th edition Carol M. Lehman, Debbie D. DuFrene - Solutions

Discover a comprehensive resource for "Business Communication 16th Edition" by Carol M. Lehman and Debbie D. DuFrene. Access the online answers key and solutions manual, offering step-by-step answers to enhance your understanding. Our solutions PDF includes solved problems and detailed chapter solutions, perfect for students and educators alike. Explore the questions and answers section for insight into the textbook's test bank, and benefit from the instructor manual for guided learning. Available for free download, this invaluable tool is your go-to for mastering the art of business communication.

Why is it a sensible procedure for soldiers to break step when marching over a bridge?
Why is the sound of a harp soft in comparison with the sound of a piano?
Try this with your friends. Hold a dollar bill so that the midpoint hangs between a friend's fingers and challenge him to catch it by snapping his fingers shut when you release it. He won't be able to catch it! Explanation: From d = ½ gt2, the bill will fall a distance of 8 centimeters (half
Your classmate says that the speed of sound and the frequency of sound depend on the medium in which the sound travels. What part of this statement do you disagree with?
The sitar, an Indian musical instrument, has a set of strings that vibrate and produce music, even though they are never plucked by the player. These "sympathetic strings" are identical to the plucked strings and are mounted below them. What is your explanation?
Why does a dance floor heave only when certain kinds of dance steps are being performed?
How can a certain note sung by a singer cause a crystal glass to shatter?
Are beats the result of interference, of the Doppler effect, or of both?
Is it correct to say that beats of sound are much the same thing as the rhythmic "beat" of music? Defend your answer.
A piano tuner using a 264-Hz tuning fork hears 4 beats per second. What are two possible frequencies of vibration of the piano wire?
A human cannot hear sound at a frequency of 100 kHz or sound at 102 kHz. But if you walk into a room in which two sources are emitting sound waves, one at 100 kHz and the other at 102 kHz, you'll hear sound. Explain
How does sound relate to energy?
What is the average range of a young person's hearing?
You can compare your reaction time with that of a friend by catching a ruler that is dropped between your fingers. Let a friend hold the ruler as shown and you snap your fingers as soon as you see the ruler released. The number of centimeters that pass through your fingers depends on your reaction
Distinguish between infrasonic and ultrasonic sound waves?
Relative to solids and liquids, how does air rank as a conductor of sound?
Why doesn't sound travel in a vacuum?
Distinguish between a compression and a rarefaction?
Do compressions and rarefactions travel in the same direction, or in opposite directions, in a wave?
What factors does the speed of sound depend upon? What are some factors that it does not depend upon?
Does sound travel faster in warm air than in cold air?
Which is normally greater: the energy in ordinary sound or the energy in ordinary light?
What ultimately becomes of the energy of sound in the air?
What is an echo?
Stand flat-footed next to a wall. Make a mark on the wall at the highest point you can reach. Then jump vertically and mark this highest point. The distance between the two marks is your vertical jumping distance. Use these data to calculate your personal hang time.
What is a reverberation?
Does sound tend to bend upward or downward when its speed is less near the ground?
Why does sound sometimes refract under water?
What did Fourier discover about complex periodic wave patterns?
A high-fidelity sound system may have a frequency range that extends up to or beyond 20,000 Hz. What is the purpose of this extended range?
Distinguish between analog and digital for how the sound signal is captured on phonograph records versus a CD.
Why does the use of blue light allow more information on a DVD?
Find a clock that ticks. Then test to see which ear has the better hearing by covering one ear and finding how far away your open ear can hear the ticking; repeat for the other ear. Notice also how the sensitivity of your hearing improves when you cup your ears with your hands.
Make the lowest-pitched sound you are capable of; then keep doubling the pitch to see how many octaves your voice can span. If you are a singer, what is your range?
On a sheet of graph paper, construct one full cycle (one period of the fundamental) of the composite wave of Figure 21.6 by superposing various vertical displacements of the fundamental and first two partial tones. Your instructor can show you how this is done. Then find the composite waves of
Show that the average speed of a rabbit that runs a distance of 30 m in a time of 2 s is 15 m/s.
A violin string playing the note A oscillates at 440 Hz. What is the period of the string's oscillation?
The string of a cello playing the note C oscillates at 264 Hz. What is the period of the string's oscillation?
How much more intense is sound at 40 dB than sound at 0 dB?
How much more intense is a sound of 40 dB than a sound of 30 dB?
You blow across the mouths of identical bottles A, B, and C, each containing a different amount of water, as shown. From highest to lowest, rank the pitch of sound for each.
Your friend says that frequency is a quantitative measure of pitch. Do you agree or disagree?
As the pitch of sound gets higher, what happens to the frequency?
Why should guitars be played offstage before they are brought onstage for a concert?
If sound becomes louder, which wave characteristic is likely increasing: frequency, wavelength, amplitude, or speed?
Does the pitch of a note depend on sound frequency, loudness, quality, or all of these?
Calculate your average walking speed when you step 1.0 m in 0.5 s.
When a guitar string is struck, a standing wave is produced that causes the sounding board to oscillate with a large sustained amplitude, pushing back and forth against the surrounding air to generate sound. How does the frequency of the resulting sound compare with the frequency of the standing
The strings on a harp are of different lengths and produce different notes. How are different notes produced on a guitar, where all strings have the same length?
If a vibrating string is made shorter (as by holding a finger on it), how does this affect the frequency of vibration and pitch?
A nylon guitar string vibrates in a standing-wave pattern, as shown in the figure. What is the wavelength of the wave?
Why do tuning forks with long tines vibrate at a lower frequency than short-tined forks?
Why are the bass strings of a guitar thicker than the treble strings?
Will the thicker or thinner of two guitar strings of the same tension and length vibrate at the higher frequency?
Why doesn't a vibrating guitar string sound as loud when it is mounted on a workbench as it does when mounted on the guitar?
Why do the same notes on a trumpet and on a saxophone sound different when both are played with the same pitch and loudness?
The amplitude of a transverse wave in a stretched string is the maximum displacement of the string from its equilibrium position. What does the amplitude of a longitudinal sound wave in air correspond to?
Show that the acceleration of a car that can go from rest to 100 km/h in 10 s is 10 km/h·s.
Which of the two musical notes displayed one at a time on an oscilloscope screen has the higher pitch?
Tom Senior makes music by setting small columns of air into vibration by blowing across the ends of drinking straws of various lengths. Which straws, the short ones or the long ones, produce a lower pitch? What would you expect of the pitch produced by the much larger musical instrument behind Tom
One person has a threshold of hearing of 5 dB, and another of 10 dB. Which person has the more acute hearing?
How is an electronic organ able to imitate the sounds of various musical instruments?
Why does your voice sound fuller in the shower?
The frequency range for a telephone is between 500 Hz and 3000 Hz. Why doesn't a telephone do a very good job of transmitting music?
The note middle C on a piano has a fundamental frequency of about 262 Hz. What is the frequency of the second harmonic of this note?
If the fundamental frequency of a guitar string is 220 Hz, what is the frequency of the second harmonic? Of the third harmonic?
How many nodes, not including the endpoints, are in a standing wave that is three wavelengths long? How many nodes are in a standing wave that is four wavelengths long?
Make up a multiple-choice question that distinguishes between any of the terms listed in the Summary of Terms.
Show that the acceleration of a hamster is 5 m/s2 when it increases its velocity from rest to 10 m/s in 2 s. Distance 5 average speed × time
The yellow-green light emitted by streetlights matches the yellow-green color to which the human eye is most sensitive. Consequently, such a 100-W streetlight emits light that is better seen at night. Similarly, the monitored sound intensities of TV commercials are louder than the sound of regular
A guitar and a flute are in tune with each other. Discuss how a change in temperature could alter this situation.
Your classmate says that a harmonic series of frequencies includes the fundamental frequency and integral multiples of the fundamental frequency. Do you agree or disagree?
Discuss why it is safe to say that you will have a significantly greater loss of hearing in your later years than your grandparents experienced.
Distinguish between noise and music.
What are the three principal characteristics of musical tones?
How does a high-pitch musical note relate to frequency?
How does the highest pitch one can hear vary with age?
What does a decibel measure?
How many decibels correspond to the lowest-intensity sound we can hear?
According to the parallelogram rule, what quantity is represented by the diagonal of a constructed parallelogram?
Show that the hamster in the preceding problem travels a distance of 22.5 m in 3 s.
Is the sound of 30 dB 30 times greater than the threshold of hearing, or 103 (a thousand) times greater?
Between sound intensity and loudness, which is more subjective?
How do the loudest sounds we can tolerate compare with the faintest sounds?
What is meant by the fundamental frequency of a musical note?
If the fundamental frequency of a note is 200 Hz, what is the frequency of the second harmonic?
If the fundamental frequency of a note is 200 Hz, what is the frequency of the third harmonic?
What determines the musical quality of a note?
Why do the same notes plucked on a banjo and on a guitar have distinctly different sounds?
What are the three principal classes of musical instruments?
Why do orchestras generally have a greater number of stringed instruments than wind instruments?
Show that a freely falling rock drops a distance of 45 m when it falls from rest for 3 s.
Why are materials such as glass and rubber good insulators?
How does a semiconductor differ from a conductor or an insulator?
What is a transistor composed of, and what are some of its functions?
How does the flow of current differ in a superconductor compared with the flow in ordinary conductors?
What happens to electrons in any charging process?
What kind of charging occurs when you slide your body across a plastic surface?
What kind of charging occurs during thunderstorms?
What is the primary purpose of a lightning rod?

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Business Communication 16th edition Carol M. Lehman, Debbie D. DuFrene - Solutions

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