A-LevelPhysicsWavesFeb/Mar 2021Paper 2 Q54 Marks
A source of sound is attached to a rope and then swung at a constant speed in a horizontal circle, as illustrated in Fig. 5.1. [Figure 5.1] The source moves with a speed of 12.0ms⁻¹ and emits sound of frequency 951 Hz. The speed of the sound in the air is 330ms⁻¹. An observer, standing a very long distance away from the source, hears the sound.
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