Question

show all steps please

If the source of a sound and an observer are moving relative to one another in a way other than along the same straight line, we must invoke the gerneral Doppler equation. The genal Doppler equation is given by V - Vs cos(es) where 00 and 0s are defined in Γ ure a Apply his equatiun tu he scena, o r' which a reight train 15 aveling dt a oon tant speed o 23.0 " s oward the intersection shown "figure b from the tracks. The train's horn emits a frequency of 195 Hz when the train is 40.0 m from the Intersection. Assume the speed of sound is 343 m/'s. A tat is s opped red he cross ng 30.0 m (a) What is the frequency (in Hz) heard by the passengers in the car? (Rournd your aniswer to at least three significant figures.) H7 b the train e mits his sound continuous answer to at least three slgnificant figures.) and the car is stationary ar this osition on be ore the train arr es unti ng a er it eaves, what ance of n uencies do pas enne sin ca near orte maximum, in max Hz Hz (c) Suppose the car is foolishly trying to beat the train to the intersection and is traveling at 41.0 m's toward the tracks. When the car is 30.0 m from the tracks and the train is 40.0 m from the intersection, what is the frequency (in Hz) heard by the passengers in the car now? Hz

Answer 1

Use the Doppler effect equations given in the question.

Calculate the angles using trigonometry.

Understand the values of speeds of the observer and the source. When the car is is stopped the speed of observer is zero.