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07-03-2024
Physics

contestada

A police siren produces a sound whose frequency ranges from 635 Hz to 912 Hz. Calculate what range of frequencies an observer will hear if the police car is approaching the observer at a speed of 90 km/h.
a) The observed frequency range is...
b) The effect of the approaching speed on observed frequency is...
c) The formula for calculating the observed frequency is...
d) None of the above.

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