(S1-2) Speed of Sound Using Open Columns Exam

The speed of a sound wave is determined by:

1 its amplitude
2 its intensity
3 its pitch
4 number of harmonics present
5 the transmitting medium

During a time interval of exactly one period of vibration of a tuning fork, the emitted sound travels a distance:

1 equal to the length of the tuning fork
2 equal to twice the length of the tuning fork
3 of about 330m
4 which decreases with time
5 of one wavelength in air

Which one of the following will result in standing waves?

1 the superposition of waves that travel with different speeds
2 the superposition of identical waves that travel in the same direction
3 the superposition of identical waves that travel in opposite directions
4 the superposition of nearly identical waves of slightly different amplitudes
5 the superposition of nearly identical waves of slightly different frequencies

What is the distance from the fixed end of a guitar string to the nearest antinode?

1 λ
2 2λ
3 λ/2
4 λ/4
5 3λ/4

A standing wave is oscillating at 690 Hz on a string, as shown in the figure. What is the speed of traveling waves on this string?

1 280 m/s
2 410 m/s
3 210 m/s
4 140 m/s

A periodic wave is produced on a stretched string. Which one of the following properties is not related to the speed of the wave?

1 frequency
2 amplitude
3 period
4 wavelength
5 tension in the string

What is the wavelength of a wave with a speed of 12 m/s and a period of 0.25 s?

1 0.25 m
2 1.5 m
3 3.0 m
4 24 m
5 48 m

A wave generated in a medium is a longitudinal wave when :

1 there is a net transport of matter by the wave
2 the molecules of the medium are unable to exert forces on each other
3 molecular displacements are parallel to the wave velocity
4 molecular displacements are perpendicular to the wave velocity
5 the density of the medium is less than the density of water

The speed of the wave is:

1 2πk/ω
2 ω/k
3 ωk
4 2π/k
5 k/2π

The wavelength of the wave is:

1 2πk/ω
2 k/ω
3 ωk
4 2π/k
5 k/2π

Let f be the frequency, v the speed, and T the period of a sinusoidal traveling wave. The angular frequency is given by:

1 1/T
2 2π/T
3 vT
4 f/T
5 T/f

Let f be the frequency, v the speed, and T the period of a sinusoidal traveling wave. The correct relationship is:

1 f =1/T
2 f = v + T
3 f = vT
4 f = v/T
5 f = T/v

For a given medium, the frequency of a wave is:

1 independent of wavelength
2 proportional to wavelength
3 inversely proportional to wavelength
4 proportional to the amplitude
5 inversely proportional to the amplitude

A tuning fork produces sound waves of wavelength λ in air. This sound is used to cause resonance in an air column, closed at one end and open at the other. The length of this column CANNOT be:

1 λ/4
2 2λ/4
3 3λ/4
4 5λ/4
5 7λ/4

Consider a pipe of length L that is open at both ends. What are the wavelengths of the three lowest pitch tones produced by this pipe?

1 4L, 2L, L
2 2L, L, L/2
3 2L, L, 2L/3
4 4L, 4L/3, 4L/5
5 2L, L, L/2

Two organ pipes, a pipe of fundamental frequency 440 Hz, closed at one end, and a pipe of fundamental frequency 660 Hz, open at both ends, produce overtones. Which choice below correctly describes overtones present in both pipes?

1 After the first overtone of each pipe, every second overtone of the first pipe matches every second overtone of the second pipe.
2 After the first overtone of each pipe, every second overtone of the first pipe matches every third overtone of the second pipe.
3 After the first overtone of each pipe, every third overtone of the first pipe matches every second overtone of the second pipe.
4 After the first overtone of each pipe, every second overtone of the first pipe matches every fourth overtone of the second pipe.
5 After the first overtone of each pipe, every third overtone of the first pipe matches every fourth overtone of the second pipe.

Two pipes are each open at one end and closed at the other. Pipe A has length L and pipe B has length 2L. Which harmonic of pipe B matches in frequency the fundamental of pipe A?

1 The fundamental
2 The second
3 The third
4 The fourth
5 There are none

Average Speed = (m/s)