Question

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
​

Answer 1

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.