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.

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80cm/s.

24cm/s.

53.3cm/s.