Questions:
115: Frequency and wavelength of standing waves.
120: Wavelength of a standing wave.
125: Modes.
115.
For a standing wave on a string,
a)
you can have any 
and any f so
long as the relationship, v = f
holds.
b) only certain wavelengths and frequencies
are allowed
c) the wave velocity is totally determined
by the medium
d) the wave velocity depends on the dynamic
and inertial parameters
e) a and c only
f) b, c and d only
g) a, c and d only
h) none of the above
Fundamentals of Sound
reference: Sec. 2-C.
120. Consider the diagram below for a standing wave on a string 9 ft long that is tied at both ends. The wave velocity in the string is 16 ft/s.
What is the wavelength?
Click HERE
to check your answer.
Fundamentals of Sound reference: Sec. 2-C.
125. Consider again the diagram in Question 120 for a standing wave on a string 9 ft long that is tied at both ends.
Which mode is this?
a)
2nd Harmonic (and no other answer is correct)
b) 3rd Harmonic ( and no other answer
is correct)
c) 2nd Overtone( and no other answer is
correct)
d) 3rd Overtone (and no other answer is
correct)
e) Both a and c
f) Both b and d
g) Both b and c
Fundamentals of Sound
reference: Sec. 2-C.
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