1.
The unit for wavelength is
/m
m/s
m
m*s
2.
The unit for the product of wavelength and frequency is
m*s
Hz
s/m
m/s
3.
The amplitude (peak) of the wave in the figure is
2 m
4 m
6 m
8 m
4.
The wavelength is
2 m
4 m
6 m
Cannot be determined from the given information.
5.
The frequency of the wave is
.5 Hz
1 Hz
2 Hz
4 Hz
6.
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?
36 Hz
16 Hz
8 Hz
4 Hz.
7.
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?
36 Hz
16 Hz
8 Hz
4 Hz
8.
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?
60 m/s
40 m/s
20 m/s
10 m/s
9.
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?
48000 N
48 N
240 N
.24 N
10.
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?
259 m/s
130 m/s
65 m/s
1037 m/s
11.
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?
29 N
79 N
149 N
Not enough information is given.
12.
The intensity level of one sound is 5 dB above another one. The ratio of the intensity of the first to the second is
1.6/1
3.2/1
5/1
10/1
13.
The intensity of one sound is 5 times the intensity of the second. What is the difference in the intensity level?
.7 dB
5 dB
7 dB
10 dB
14.
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?
2 cm
4 cm
6 cm
8 cm
15.
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?
.13 Hz
.25 Hz
.33 Hz
.5 Hz
16.
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?
.13 Hz
.25 Hz
.33 Hz
.5 Hz
17.
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?
.5 cm/s
1 cm/s
1.5 cm/s
2 cm/s
18.
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?
.25 cm/s
.5 cm/s
1.5 cm/s
2 cm/s
19.
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?
1 cm
2 cm
3 cm
4 cm
20.
The wave equation for a particular wave is
y(x,t)=4sin(p (x-400t)/2) what is the amplitude of the wave? (All values are in appropriate SI units.)
4 m
2 m
400 m
.02 m
21.
In the previous question what is the wavelength?
4 m
2 m
400 m
0.02 m
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?
42.88
85.75
128.63
171.5
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?
1 m
2 m
4 m
8 m
24.
What is the frequency of the first overtone of an open organ pipe .52 m long?
660 Hz
330 Hz
990 Hz
None of the above.
25.
What is the frequency of the 2nd harmonic of a .52 m long closed organ pipe?
330 Hz
660 Hz
990Hz
None of the above.
26.
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?
81 Hz
111 Hz
202 Hz
1111 Hz
27.
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?
100 Hz
90 Hz
110 Hz
200 Hz
28.
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?
53.5
8
4
None of the above.