Content Frame
Note for screen reader users: There is text between the form elements on this page. To be sure that you do not miss any text, use item by item navigation methods, rather than tabbing from form element to form element.
Skip Breadcrumb Navigation
Home  arrow Chapter 12  arrow Practice Questions

Practice Questions



This activity contains 25 questions.

Question 1.
What are the units for intensity?


Open Hint for Question 1 in a new window.
 
End of Question 1


Question 2.
What are the units of intensity level?


Open Hint for Question 2 in a new window.
 
End of Question 2


Question 3.
What are the units of power?


Open Hint for Question 3 in a new window.
 
End of Question 3


Question 4.
If 10n = a then log10(a) = n, if en = a then loge(a) = n (e = 2.17...). Use this to find the answer to this question.

What is the log2(16)?


Open Hint for Question 4 in a new window.
 
End of Question 4


Question 5.
If 10n = a then log10(a) = n, if en = a then loge(a) = n (e = 2.17...). Use this to find the answer to this question.

What is the Log3(9)?


Open Hint for Question 5 in a new window.
 
End of Question 5


Question 6.
If 10n = a then log10(a) = n, if en = a then loge(a) = n (e = 2.17...). Use this to find the answer to this question.

What is the Log4(2)?


Open Hint for Question 6 in a new window.
 
End of Question 6


Question 7.
log(2) + log(3) =


Open Hint for Question 7 in a new window.
 
End of Question 7


Question 8.
log(2) - log(3) =


Open Hint for Question 8 in a new window.
 
End of Question 8


Question 9.
The log(35) =


Open Hint for Question 9 in a new window.
 
End of Question 9


Question 10.
What is the speed of sound if the temperature is 10 degrees Celsius?


Open Hint for Question 10 in a new window.
 
End of Question 10


Question 11.
If the speed of sound is 350 m/s and the wavelength is 10 cm, what is the frequency?


Open Hint for Question 11 in a new window.
 
End of Question 11


Question 12.
On a clear winter day the speed of sound at ground level is


Open Hint for Question 12 in a new window.
 
End of Question 12


Question 13.
The intensity level of one sound is 5 dB above another one. The ratio of the intensity of the first to the second is


Open Hint for Question 13 in a new window.
 
End of Question 13


Question 14.
The intensity of one sound is 5 times the intensity of the second. What is the difference in the intensity level?


Open Hint for Question 14 in a new window.
 
End of Question 14


Question 15.
If you were to inhale a few breaths from a helium gas balloon, you would probably experience an amusing change in your voice. You would sound like Donald Duck or Alvin the Chipmunk. What is the cause of this curious high-pitched effect?


Open Hint for Question 15 in a new window.
 
End of Question 15


Question 16.
A police car has an 1000 Hz siren. It is traveling at 35 m/s on a day when the speed of sound through air is 350 m/s. The car approaches and passes an observer who is standing along the roadside. What change of frequency does the observer hear?


Open Hint for Question 16 in a new window.
 
End of Question 16


Question 17.
You are approaching a stationary sound of 1000 Hz at 35 m/s. What is the change in frequency of the sound as you pass?


Open Hint for Question 17 in a new window.
 
End of Question 17


Question 18.
The wavelengths of the sounds produced by two horns are 6 m and 7 m respectively. What beat frequency is heard when the horns are sounded on a day when the velocity of sound is 336 m/s?


Open Hint for Question 18 in a new window.
 
End of Question 18


Question 19.
The wavelengths of the sounds produced by two horns are 6 m and 7 m respectively. By how much would the temperature have to change for the beat frequency to be 9 Hz?


Open Hint for Question 19 in a new window.
 
End of Question 19


Question 20.
For a sound speed of 350 m/s, what would be the wavelength of a 5000 Hz sound?


Open Hint for Question 20 in a new window.
 
End of Question 20


Question 21.
A sound speed of 350 m/s (5000 Hz) is played. Another sound is played along with this sound and a beat frequency of 5 Hz is heard. What is the frequency of the new sound?


Open Hint for Question 21 in a new window.
 
End of Question 21


Question 22.
What is the frequency of the second harmonic of a 2 meter long stretched wire if the wave speed is 171.5 m/s?


Open Hint for Question 22 in a new window.
 
End of Question 22


Question 23.
A 2 meter long stretched wire has a wave speed of 171.5 m/s. What is the wavelength of the sound produced by the vibrating wire if the temperature is 20 oC?


Open Hint for Question 23 in a new window.
 
End of Question 23


Question 24.
What is the frequency of the first overtone of an open organ pipe .52 m long at an air temperature of 20 oC?


Open Hint for Question 24 in a new window.
 
End of Question 24


Question 25.
What is the frequency of the second harmonic of a .52 m long closed organ pipe at a temperature of 20 oC?


Open Hint for Question 25 in a new window.
 
End of Question 25





Copyright © 1995 - 2016 Pearson Education . All rights reserved. Pearson Prentice Hall is an imprint of Pearson .
Legal Notice | Privacy Policy | Permissions

Return to the Top of this Page