A-LevelPhysicsSuperpositionOct/Nov 2018Paper 2 Q412 Marks
A horizontal string is stretched between two fixed points X and Y. A vibrator is used to oscillate the string and produce a stationary wave. Fig. 4.2 shows the string at one instant in time. The speed of a progressive wave along the string is 30ms⁻¹. The stationary wave has a period of 40 ms. A particle on the string oscillates with an amplitude of 13mm. At time t, the particle has zero displacement.
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