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P. 4145. A passenger train passes a railroad-crossing at a speed of 72 km/h, and it blows a whistle at a frequency of 170 Hz. What is the pitch interval which is sensed by an observer standing next to the railroad-crossing?

(4 points)

Deadline expired on 14 April 2009.

Statistics on problem P. 4145.
 113 students sent a solution. 4 points: 51 students. 3 points: 19 students. 2 points: 33 students. 1 point: 7 students. 0 point: 1 student. Unfair, not evaluated: 2 solutions.

• Problems in Physics of KöMaL, March 2009

•  Támogatóink: Morgan Stanley