A stationary railroad whistle is sounded an echo is heard
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?
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if you have 50 ml of a buffered solution of 015m hno2 and 005m nano2 how many ml of 02m hcl can you add before the ph
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a stationary railroad whistle is sounded an echo is heard 50 seconds later by the trains engineer if the speed of sound
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Write a letter to the editor on land pollution that threatens the health of individuals living in Guyana, and clearly define the problem.
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