Question

A sound of constant frequency is produced by the siren on top of a firehouse. Compared to the frequency produced by the siren, the frequency heard by the fire fighter approaching the fire house is what?
you might try googling

doppler effect

Related Questions

A siren mounted on the roof of a firehouse emits sound at a frequency of 900 Hz. A steady wind is bl... A sound of constant frequency is produced by the si-ren on top of a firehouse. Compared to the frequ... A siren emits a sound of frequency 1200 kHz. With which frequency is it received by a car moving at... A police car moves away from the accident scene at a constant speed with its siren on. A paramedic a...