A tube is open at both ends. A loudspeaker, emitting sound of a single frequency, is placed near one end of the tube, as shown in Fig. 3.1. The speed of the sound in the tube is 340ms⁻¹. The length of the tube is 0.60 m. A stationary wave is formed with an antinode A at each end of the tube and two antinodes inside the tube. [Figure 3.1]

1. (a)State the difference between a stationary wave and a progressive wave in terms of
2. (a)(i)the energy transfer along the wave,[1]
3. (a)(ii)the phase of two adjacent vibrating particles.[1]
4. (b)(i)State what is meant by an antinode of the stationary wave.[1]
5. (b)(ii)State the distance between a node and an adjacent antinode.[1]
6. (b)(iii)Determine, for the sound in the tube,
7. (b)(iii) 1.the wavelength,[1]
8. (b)(iii) 2.the frequency.[2]
9. (b)(iv)Determine the minimum frequency of the sound from the loudspeaker that produces a stationary wave in the tube.[2]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.