Multiple Choice
You stand by the railroad tracks as a train passes by.You hear a 1 020-Hz frequency when the train approaches,which changes to 760 Hz as it goes away.How fast is the train moving? The speed of sound in air is 340 m/s.
A) 30.2 m/s
B) 34.5 m/s
C) 40.1 m/s
D) 49.7 m/s
E) 45.6 m/s
Correct Answer:
Verified
Correct Answer:
Verified
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