A train moving with a uniform acceleration, crosses station A with a velocity of 108 kmph and
another station B with a velocity of 144 kmph . The time taken for the train to travel from A to B is
20 minutes. The distance between the two stations is
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Answer:
Speed of sound =330 m/s
Calculate beat
f
b
=120[(
330+30cos37
o
330+10cos53
o
)−(
330
330+10
)]=120[
306
336
−
33
34
]=8.128Hz.
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