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Doppler Shift/ Doppler effect HELP
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[QUOTE="Roaku, post: 4406937, member: 421867"] Okay, so I'm meant to use the equation twice. In that case, f obs (police) = fs (( vw + vobs) / (vw + vs ) ) I keep fs = 4.3kHz and as both sources are still going towards each other (+) vw = 340 m/s V obs (detector) = v = fλ = 4,300 * 0.044 = 189.2 km/h (?) (52.56 m/s) Vs = 64 km/ h (17.778 m/s) f (obs police) = 4.718 kHz f obs (ambulance) = fs (( vw + vobs) / (vw + vs ) ) As above keep vw and (+) v/λ = fs = 110 km/h * 0.044 = 1.34 kHz (?) Swap Vobs = 64 km/h (17.778 m/s) vs (police) = 110 km/h (30.558 m/s) f (obs ambulance) = 1.293 kHz Δf = 4.718 - 1.293 = 3.42 kHz ? (not the right answer of 2,200 Hz)... Mind pointing out what I'm getting wrong? [/QUOTE]
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