Answer:
Step-by-step explanation:
The original frequency of sound being emitted f₀ = 1800
Its velocity towards the observer v ( let )
Apparent frequency f = 2130
velocity of sound = V

Placing the given values

1.1833 =

1.1833 v = 62.87
v = 53.13 m /s .
b ) In the second case
formula for apparent frequency

Substituting the values

= 2458 Hz .