Question

Joe, standing near a straight road, records the sound of the horn of a car traveling at a constant speed. The recorded sound in trial t is ______ that in other trials. When the car is far away, the average of the frequencies moving in and out is the frequency at rest. The speed in trial u is ______ that in trial r. Determine the speed in trial s in relation to trial q. The distance of Joe from the path in trial q is ______. The speed in trial u is ______ that in other trials.

Answer 1

The student's question deals with applying the Doppler effect principles to determine frequency changes as perceived by an observer when there is relative motion between the observer and the source of sound.

Step-by-step explanation:

The student's question pertains to the concept of the Doppler effect, which is a change in the frequency of a wave in relation to an observer moving relative to the source of the wave. In the case provided, the student's recording of car horns and subsequent trials seem related to the frequency changes due to Doppler shift. Trials mentioned like t, u, s, and q are not explicitly described; hence, can't be answered without further context. However, using the Doppler effect equation, fo = fs (v + vo) / (v + vs), where fo is the observed frequency, fs is the source frequency, v is the speed of sound, vo is the observer velocity, and vs is the source velocity, we can calculate frequencies observed during different scenarios based on relative speeds of the source and observer.