The apparent frequency f' = f *c/(c -v) --> 485 =
f*343/(343-v).........................(1)
f" = f*c/(c+v) ---> 458 = f *343/(343+v)
..................................(2)
-Divide equation (1) and (2)
485/458 = (f*343 *(343+v))/ (f *343*(343-v))
v = 9261/943 = 9.82 m/s
An alert physics Student stands beside the tracks as a train rolls slowly past. He notes...
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 459 Hz when the train is approaching him and 434 Hz when the train is receding from him. Using these frequencies, he calculates the speed of the train. What value does he find? The speed of sound in air is 343m/s.
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 452 Hz when the train is approaching him and 427 Hz when the train is receding from him. Using these frequencies, he calculates the speed of the train. What value does he find? (Assume the speed of sound in air is 343 m/s.)
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 473 Hz when the train is approaching him and 456 Hz when the train is receding from him. Using these frequencies, he calculates the speed of the train. What value does he find? (Assume the speed of sound in air is 343 m/s.)
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 464 Hz when the train is approaching him and 441 Hz when the train is receding from him. Using these frequencies, he calculates the speed of the train. What value does he find? (Assume the speed of sound in air is 343 m/s.)
an alert physics student stands besides the tracks as a train rolls slowly past. he notes that the frequency of the train whistle is 442Hz when the train is approaching him and 414Hz when the train is receding from him. using these frequencies, he calculates the speed of the train. what value does he find? (assume the speed of sound in air is 343 m/s)