Answer :
Answer:
Explanation:
Given
apparent frequency is 1 % lower than the original frequency
Speed of sound [tex]v=343\ m/s[/tex]
suppose f is the original frequency
apparent frequency [tex]f'=0.99f[/tex]
using Doppler's formula
[tex]f'=f\cdot \frac{v-v_o}{v+v_s} [/tex]
where
[tex]f'[/tex]=apparent frequency
[tex]v[/tex]=velocity of sound in the given media
[tex]v_s[/tex]=velocity of source
[tex]v_o[/tex]=velocity of observer
[tex]0.99f=f(\dfrac{343-v_o}{v+0})[/tex]
[tex]0.99\times 343=343-v_o[/tex]
[tex]v_o=343\times 0.1[/tex]
[tex]v_o=34.3\ m/s[/tex]