A train S1, moving with a uniform velocity of 108 km/h, approaches another train S2 standing on a platform. An observer O moves with a uniform velocity of 36 km/h towards S2, as shown in figure. Both the trains are blowing whistles of same frequency 120 Hz. When O is 600 m away from S2 and distance between S1 and S2 is 800 m, the number of beats heard by O is [Speed of the sound = 330 m/s] 36 km/h S2 600 m 800 m 108 km/h SI
A train S1, moving with a uniform velocity of 108 km/h, approaches another train S2 standing on a platform. An observer O moves with a uniform velocity of 36 km/h towards S2, as shown in figure. Both the trains are blowing whistles of same frequency 120 Hz. When O is 600 m away from S2 and distance between S1 and S2 is 800 m, the number of beats heard by O is [Speed of the sound = 330 m/s] 36 km/h S2 600 m 800 m 108 km/h SI
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter17: Sound
Section: Chapter Questions
Problem 122P: An airplane is flying at Mach 1.50 at an altitude of 7500.00 meters, where the speed of sound is...
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![A train S1, moving with a uniform velocity of 108 km/h, approaches another train S2
standing on a platform. An observer O moves with a uniform velocity of 36 km/h towards
S2, as shown in figure. Both the trains are blowing whistles of same frequency 120 Hz.
When O is 600 m away from S2 and distance between S1 and S2 is 800 m, the number of
beats heard by O is
[Speed of the sound = 330 m/s]
36 km/h
S2
600 m
800 m
108 km/h
S1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd2a8fcd4-3892-4cbc-afa3-574ba8855dc6%2F39365873-3eb8-4f6a-8815-5d4063418aa4%2Fzypz9p8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A train S1, moving with a uniform velocity of 108 km/h, approaches another train S2
standing on a platform. An observer O moves with a uniform velocity of 36 km/h towards
S2, as shown in figure. Both the trains are blowing whistles of same frequency 120 Hz.
When O is 600 m away from S2 and distance between S1 and S2 is 800 m, the number of
beats heard by O is
[Speed of the sound = 330 m/s]
36 km/h
S2
600 m
800 m
108 km/h
S1
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