A travelling wave is created on a string. The graph below shows the variation with time t of the
displacement y of a particular point on the string.
The variation with distance x of the displacement y of the string at t =0 is shown below.
(a) Use information from the graphs to calculate, for this wave,
(i) the wavelength.
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(ii) the frequency.
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(iii) the speed of the wave.
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1) λ=3 cm
ΑπάντησηΔιαγραφή2) f=1/T=1/0.25=4 kHz
3) v=λf=4 x 30= 120 m/s