Multiple Choice
A stationary railroad whistle is sounded. An echo is heard 5.0 seconds later by the train's engineer. If the speed of sound is 343 m/s, how far away is the reflecting surface?
A) 68 m
B) 140 m
C) 860 m
D) 1700 m
E) 2000 m
Correct Answer:
Verified
Correct Answer:
Verified
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