Physics 011
A of
PQ#11A
Chapter
11 : Vibrations and Waves
Practice Questions


1. 

The unit
for the spring constant is Review Section 111 in Giancoli. 


2. 

The unit
for the period is 


3. 

The unit
for frequency is Review Section 111 in Giancoli. 


4. 

The unit
for wavelength is Review Section 117 in Giancoli. 


5. 

The unit
for the product of wavelength and frequency is Review Section 117 in Giancoli. 


6. 

The amplitude of the wave in the figure is Review Figure 1123 in Giancoli. 


7. 

The wavelength is The figure only shows the temporal (time) behavior of the wave. Review Section 117 in Giancoli. 


8. 

The frequency of the wave is 


9. 

A stretched spring, fixed at both ends, vibrates at a frequency of 12 Hz
with a standing transverse wave pattern as shown. What is this spring's
fundamental frequency? You should have divided by 3. Review Section 1111 in Giancoli. 


10. 

A stretched spring, fixed at both ends, vibrates at a frequency of 12 Hz
with a standing transverse wave pattern as shown. What would be the frequency
of the first overtone? 


11. 

A stretched spring, fixed at both ends, vibrates at a frequency of 12 Hz
with a standing transverse wave pattern as shown. If the string is 5 meters
long, what is the wave velocity? Review Section 1111 in Giancoli. 


12. 

If a
string has a wave speed of 200 m/s and a mass per length ratio of 1.2 g/m,
what is the tension? Convert grams to kilograms. Review Section 1111 in Giancoli. 


13. 

A stretched
cord has a fundamental frequency of 144 Hz, a length of .9 m, and a mass of 2
g. What is its wave speed? 


14. 

A
stretched cord has a fundamental frequency of 144 Hz, a length of .9 m, and a
mass of 2 g. What is the tension on the cord? Review Example 1113 in Giancoli. 


15. 

The animation shows the Tacoma Narrows Bridge (see Online Destinations)
shortly before its collapse. What is its frequency? Measure the time for the car to make one complete vibration. Review Section 1112 in Giancoli. 


16. 

The animation shows the Tacoma Narrows Bridge (see Online Destinations)
shortly before its collapse. The distance between the bridge towers (nodes)
was about 860 meters and there was also a midway node. What was the
wavelength of the standing torsional wave? Review Section 1112 in Giancoli. 


17. 

The animation shows the Tacoma Narrows Bridge (see Online Destinations)
shortly before its collapse. What is the amplitude? Compare it to the size of the car. Review Section 1112 in Giancoli. 


18. 

The picture shows two moving triangular waves.The scale shown at the bottom holds for the vertical scale, also. What is the wavelength of the black wave? Measure the wavelength from peak to peak. Review Section 117 in Giancoli. 


19. 

The picture shows two moving triangular waves.The scale shown at the bottom holds for the vertical scale, also. What is the frequency of the black wave? Pick a place and count the seconds for the wave to return to the same location. Review Section 117 in Giancoli. 


20. 

The picture shows two moving triangular waves.The scale shown at the bottom holds for the vertical scale, also. What is the frequency of the red wave? Pick a place and count the seconds for the wave to return to the same location. Review Section 117 in Giancoli. 


21. 

The picture shows two moving triangular waves.The scale shown at the bottom holds for the vertical scale, also. What is the velocity of the black wave? Velocity is the product of wavelength and frequency. Review Section 117 in Giancoli. 


22. 

The picture shows two moving triangular waves.The scale shown at the bottom holds for the vertical scale, also. What is the velocity of the red wave? Velocity is the product of wavelength and frequency. Review Section 117 in Giancoli. 


23. 

The picture shows two moving triangular waves.The scale shown at the bottom holds for the vertical scale, also. What is the amplitude of the red wave? Review Section 117 in Giancoli. 


24. 

If the
effective spring constant of a 2000 kg older car (with poor shocks) is 60000
N/m, what is the period of its vibration after hitting a bump? Review Section 113 Giancoli. 


25. 

What is
the effective spring constant of a 10 kg, 1.5 m simple pendulum? Review Section 114 Giancoli. 