Rank the pitches heard from the siren of a fire engine, from highest to lowest, when the fire engine is traveling (a) Toward the listener at 30 km/h. (b) Toward the listener at 50 km/h. (c) Away from the listener at 20 km/h.
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Rank the pitches heard from the siren of a fire engine, from highest to lowest, when the fire engine is traveling
(a) Toward the listener at 30 km/h.
(b) Toward the listener at 50 km/h.
(c) Away from the listener at 20 km/h.
B>C>A
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