Grade 11Wave Motion
a train is approaching a railway crossing at a speed of 120km/hr sound a short whistle at frequency640hzwhen it is 300m away from the crossing. speed of sound in air is 340,/s. what will be the frequency heard by the person standing on a road perpendicular to the track through the crossing at a distance of 400m from the crossing
a train is approaching a railway crossing at a speed of 120km/hr sound a short whistle at frequency640hzwhen it is 300m away from the crossing. speed of sound in air is 340,/s. what will be the frequency heard by the person standing on a road perpendicular to the track through the crossing at a distance of 400m from the crossing
