Two cars have identical horns, each emitting a frequency of fs = 395 hz. one of the cars is moving with a speed of 12.0 m/s toward a bystander waiting at a corner, and the other car is parked. the speed of sound is 343 m/s. what is the beat frequency heard by the bystander?

The beat frequency heard by the bystander is 14.32 Hz

Explanation:

Given that,

Emitting frequency = 395 Hz

Speed of cars = 12.0 m/s

Speed of sound = 343 m/s

We need to calculate the frequency

Using formula of frequency

Where, v = speed of sound

v' = speed of cars

f₀= emitting frequency

Put the value into the formula

We need to calculate the beat frequency heard by the bystander

Hence, The beat frequency heard by the bystander is 14.32 Hz.

the maxium height is 34m/s