Question
A car traveling at 47 m/s and a truck traveling at 10 m/s are on the same straight road. The automobile horn has a frequency
A car traveling at 47 m/s and a truck traveling at 10 m/s are on the same straight road. The automobile horn has a frequency of 401 Hz. What is the change in frequency observed by the truck driver once the automobile has passed him? It is assumed that the automobile and the truck are traveling (a) in the same direction; (b) in opposite directions.
(Example: A car traveling at 46 m/s and a truck traveling at 14 m/s are on the same straight road. The automobile horn has a frequency of 407 Hz. What is the change in frequency observed by the truck driver once the automobile has passed him? It is assumed that the automobile and the truck are traveling (a) in the same direction; (b) in opposite directions.
Answer:a)-78Hz b)-146Hz )
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Fundamentals of Heat and Mass Transfer
Authors: Incropera, Dewitt, Bergman, Lavine
6th Edition
978-0470055540, 471457280, 470881453, 470055545, 978-0470881453, 978-0471457282
