Wave on String
Standing Waves
Organ Pipes
Doppler Effect
Beats
Interference
Doppler Effect in Acoustic Waves
f' = f₀ · [(v ± v_o)/(v ∓ v_s)]
v_s =
150
m/s
v_o =
0
m/s
Mach M =
0.44
Observed Frequency (f')
607 Hz
Source f₀ = 400 Hz
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Subsonic (M < 1)
Mach 1.0
Supersonic (M > 1)
Moving Obs
Sound
Source v_s:
150m/s
Obs v_o:
0m/s