Back to 17.4 Doppler Effect and Sonic Booms

17.4 Exercise 8

Avg difficulty 2.5

(a) What frequency is received by a person watching an oncoming ambulance moving at 110 km/h and emitting a steady 800-Hz sound from its siren? The speed of sound on this day is 345 m/s. (b) What frequency does she receive after the ambulance has passed?

OpenStax College Physics 2e, 17.4 Doppler Effect and Sonic Booms, exercise 8

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.