Two train whistles have identical frequencies of 180 hz. when one train is at rest in the station, sounding its whistle, a beat frequency of 3.7 hz is heard from a train moving toward us. find the speed of the train. (take the speed of sound to be 345 m/s.)

7 m/s

Step-by-step explanation:

We are given that

Frequency at stationary =

Beat frequency=3.7 Hz

Apparent frequency=

Speed of sound=v=345 m/s

We have to find the speed of train

Apparent frequency=

Substitute the values then we get

Hence, the speed of train=7 m/s

135 is your answer

step-by-step explanation:

try 180 times three then divide that number by 4 (sides) to get your answer. im glad to : )

answer: the answer is 127 degrees