a. A sound wave travelling through air can be represented as shown in the diagram. Which distance,
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a. A sound wave travelling through air can be represented as shown in the diagram.
Which distance, A, B, C, or D, represents:
i. one wavelength?
ii. The amplitude of the wave?
b. The cone of a loudspeaker is vibrating. The diagram shows how the air particles are spread out in front of the cone at a certain time.
P is a compression, Q is a rarefaction.
i. Describe how the pressure in the air changes from P to Q.
ii. Describe the motion of the air particles as the sound wave passes.
iii. Copy the diagram of air particles above and mark and label a distance equal to one wavelength of the sound wave.
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