Question

Problem 4a

Answer 1

Given information

Given Values:

The industrial whistle emits a sound with a frequency of .

The wind is the velocity at m/s.

Step-by-step explanation

Step 1.

The Doppler effect occurs only when the source and observer are moving relative to each other along the line connecting them. The whistle and the observer are not moving relative to each other in the first four stages of this problem, hence there is no Doppler shift. The wind speed rises (or falls) with the velocity of the waves in the wind's direction, as if the speed of sound were different, yet. The frequency of the waves remains constant. In part, we examine this assertion in depth (a).