Atrain at rest emits a sound at a frequency of 1045 hz. an observer in a car travels away from the sound source at a speed of 22.4 m/s. what is the frequency heard by the observer? assume the speed of sound in air to be 344 m/s. answer in units of hz

Explanation:

Let be the speed of sound in medium.

Let be the speed of the source.

Let be the speed of the observer.

Let be the frequency emitted by the source when the source is in rest.

Let be the frequency observed by the observer.

When the observer is moving away and the source is at rest,

Given,

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2