Week 31 Assignment L2 2013-2014
name_________________
A cord of mass 0.51 kg is stretched between two supports 29 m apart. If the tension in the cord is 153 N,
how long will it take a pulse to travel from one support to the other?
0.311s
2. - Question Details Giancoli5 11.P.051. [64348]
If a violin string vibrates at 294 Hz as its fundamental frequency, what are the frequencies of the first four
harmonics?
first harmonic
294Hz
second harmonic
588Hz
third harmonic
882Hz
fourth harmonic
1180Hz
3. - Question Details Giancoli5 11.P.056. [42289]
If two successive overtones of a vibrating string are 420 Hz and 490 Hz, what is the frequency of the
fundamental?70Hz
4. - Question Details Giancoli5 11.P.057. [303196]
A guitar string is 97 cm long and has a mass of 3.6 g. From the bridge to the support post (= L) is 60 cm,
and the string is under a tension of 524 N.
What is the frequency of the fundamental?
313Hz
What is the frequency of the first overtone?
626Hz
What is the frequency of the second overtone?
939Hz
5. - Question Details Waves standing waves 1 [1729198]
A string of mass 25.0 grams is stretched between two points that are 262 cm apart. The string is under 796
N of tension.
A. What is the wave velocity in the string?
B. What is the fundamental frequency?
289 m/s
55.1 Hz
C. What is the wavelength of the fundamental frequency? 5.24 m
D. What is the period of the fundamental frequency?0.0181 s
E. What is the frequency of the second harmonic?
1.10e+02 Hz
F. What is the wavelength of the second harmonic?
2.62 m
G. What is the period of the second harmonic?
0.00907 s
H. What is the frequency of the third harmonic?
165 Hz
I. What is the wavelength of the third harmonic?
1.75 m
J. What is the period of the third harmonic?
0.00605 s
6. - Question Details Waves standing waves 2 [1730047]
A string of mass 28.6 grams is stretched between two points that are 242 cm apart. The fundamental
frequency for standing waves in the string is 47.9 Hz.
A. What is the wave velocity in the string?
B. What is the tension in the string?
232 m/s
636 N
C. What is the wavelength of the fundamental frequency?
D. What is the frequency of the fourth harmonic?
E. What is the wavelength of the fourth harmonic?
4.84 m
192 Hz
1.21 m
7. - Question Details Giancoli5 11.P.055. [7392]
The velocity of waves on a string is 99 m/s. If the frequency of standing waves is 471 Hz, how far apart are
two adjacent nodes?
0.105m