Problem P. 4145. (March 2009)

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 pont)

Deadline expired on April 14, 2009.

Statistics:

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 solutionss.

Problems in Physics of KöMaL, March 2009