Problem P. 4832. (April 2016)
P. 4832. The frequency of sound wave travelling in air at a speed of 320 m/s is 400 Hz. What is the phase difference between two points which are at a distance of 1 m in the direction of the propagation of sound?
(3 pont)
Deadline expired on May 10, 2016.
Statistics:
61 students sent a solution.  
3 points:  51 students. 
2 points:  10 students. 
