Question

a police car travels towards a stationary observer at the car emits a sound of frequency 250Hz calculate the recorded frequency the speed of sound is 340 m/s​

Answer 1

to solve this question v need speed of car as well

if u know the speed of car

then apply

f' = f [v±v(o)]/[v±v(s)]

here , v is speed of sound

v(o) is speed of observer

v(s) is speed of source

hope it helps uh......

Answer 2

Answer:we need to know the speed of car also...

Explanation:if you know the speed of car,then see attachment..