Physics, 25.09.2021 14:00, 885122bah

Boat travels through a river at a speed of 25 m/s, passing through schools and opening the soundtrack. One student measures frequency 610 Hz. Four seconds later, student measures frequency again 587 Hz if the river is a straight line 20 m wide and the speed of sound in air is 340m/s if boat is middle river. find the distance between boat with school?

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