17 Equations that changed the world

17 Equations that changed the world

& Doppler effect.....
f_{o}=\frac{v+v_{o}}{v+v_{s}} f_{s} where :

f_{o} = observer frequency of sound

v = speed of sound waves

v_{o} = observer velocity

v_{s} = source velocity

f_{s} = actual frequency of sound waves
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