3918726
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace más de 8 años
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Pregunta 1
Pregunta
1. What will this wave look like after it reflects?
Respuesta
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A
-
B
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C
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D
Pregunta 2
Pregunta
What will this wave look like after it reflects?
Respuesta
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A
-
B
-
C
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D
Pregunta 3
Pregunta
The pulse on the left is moving right, the pulse on the right is moving left. What do you see when the pulses overlap?
Respuesta
Pregunta 4
Pregunta
If these two waves were moving through water at the same time, what would the water look like?
Respuesta
Pregunta 5
Pregunta
A student started the speaker by clicking on the stopwatch. How many sound waves are there is this trial?
Respuesta
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A. 3
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B. 5
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C. 4
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D. 8
Pregunta 6
Pregunta
What is the speed of the sound waves shown here?
Respuesta
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A. 300 m/s
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B. 331 m/s
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C. 0.0030 m/s
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D. 66 m/s
Pregunta 7
Pregunta
What is the frequency of the sound waves shown here?
Respuesta
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A. 0.0037 Hz
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B. 66 Hz
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C. 260 Hz
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D. 300 Hz
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E. 330 Hz
Pregunta 8
Pregunta
What is the period of the sound waves shown here?
Respuesta
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A. 0.0151 s
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B. 0.0037 s
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C. 260 s
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D. 300 s
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E. 330 s
Pregunta 9
Pregunta
What is the wavelength of the sound waves shown here?
Respuesta
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A. 5 m
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B. 1.3 m
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C. 1 m
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D. 0.71 m
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E. 300 m
Pregunta 10
Pregunta
If your lab partner moved the frequency slider to the left so that it changed from 500 to 250 the new period would be:
Respuesta
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A. twice as big
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B. 1/2 as big
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C. Stays the same
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D. 1/4 times as big
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E. Not enough information to decide
Pregunta 11
Pregunta
If you moved the slider to the far right, doubling the amplitude, the period would be:
Respuesta
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A. twice as big
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B. 1/2 as big
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C. Stays the same
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D. 1/4 times as big
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E. Not enough information to decide
Pregunta 12
Pregunta
If the speaker vibrates back and forth at 200 Hz how much time passes between each time it produces a maximum in pressure?
Respuesta
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A. 0.2 seconds
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B. 0.200 seconds
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C. 0.005 seconds
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D. 0.02 seconds
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E. 0.05 seconds
Pregunta 13
Pregunta
A speaker is playing a constant note. What happens to the sound when you:
1) put a solid, thick glass jar over it and
2) pump the air out from the jar?
Respuesta
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A) 1 => hardly any difference; 2 => hardly any difference
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B) 1=> hardly any difference; 2 => much quieter
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C) 1=> noticeably quieter; 2 => hardly any MORE quiet
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D) 1=> noticeably quieter; 2=> much quieter still (near silence)
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E) None of these/something else/??
Pregunta 14
Pregunta
If you could put a dust particle in front of a moving speaker. Which choice below shows the motion of the dust particle?
Respuesta
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A
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B
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C
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D
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E
Pregunta 15
Pregunta
The picture shows “displacement as a function of location along a string”. What is the wavelength (“λ”)?
Respuesta
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A
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B
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C
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D
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E
Pregunta 16
Pregunta
The picture shows “displacement as a function of location along a string”. What is the amplitude?
Respuesta
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A
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B
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C
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D
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E
Pregunta 17
Respuesta
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A t3 - t2
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B t4 - t1
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C t2 - t1
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D t3 - t1
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E None of the above
Pregunta 18
Pregunta
Which one of the following is most likely to be impossible?
Respuesta
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A. Transverse waves in a gas
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B. Longitudinal waves in a gas
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C. Transverse waves in a solid
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D. Longitudinal waves in a solid
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E. They all seem perfectly possible
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