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27 Nov 2019
Two train whistles have identical frequencies of 160 Hz. When onetrain is at rest in the station and the other is moving nearby, acommuter standing on the station platform hears beats with afrequency of 6.00 Hz when the whistles operate together. If thespeed of sound is 345 m/s, what are the two possible speeds thatthe moving train can have?
a) moving towards the station
b) moving away from the station
When at rest, two trains have sirens that emit a frequency of 300Hz. The trains travel toward one another and toward an observerstationed between them. One of the trains moves at 25.5 m/s, andthe observer hears a beat frequency of 2.8 beats per second. Whatis the speed of the second train, which travels faster than 25.5m/s?
Two train whistles have identical frequencies of 160 Hz. When onetrain is at rest in the station and the other is moving nearby, acommuter standing on the station platform hears beats with afrequency of 6.00 Hz when the whistles operate together. If thespeed of sound is 345 m/s, what are the two possible speeds thatthe moving train can have?
a) moving towards the station
b) moving away from the station
When at rest, two trains have sirens that emit a frequency of 300Hz. The trains travel toward one another and toward an observerstationed between them. One of the trains moves at 25.5 m/s, andthe observer hears a beat frequency of 2.8 beats per second. Whatis the speed of the second train, which travels faster than 25.5m/s?
Patrina SchowalterLv2
7 Feb 2019
