Two trains moving along parallel tracks in opposite directions converge on a stationary observer, each sounding its whistle of frequency 350 cycles/sec One train is traveling at 50 mph What must be the speed of the other if the observer hears 5 beats per second The speed of sound in air is 750 mph. You do not have to convert units but there are 2 answers.

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Image of solution is attached below Answer is 4054 mph Say one train is A and o... View the full answer