Answer:
0.9 m,386.36 Hz
Explanation:
We are given that
Speed of train,vs=32 m/s
Frequency of whistle,f0=350 Hz
We have to find the wavelength of sound and the frequency of heard by the listener in front of the locomotive.
Speed of sound=[tex]v=340 m/s[/tex]
We know that the frequency of listener
[tex]f=f_0(\frac{v}{v-v_s})[/tex]
Using the formula
[tex]f=350\times(\frac{340}{340-32})[/tex]
[tex]f=386.36 Hz[/tex]
Wavelength,[tex]\lambda=\frac{v}{f}[/tex]
Using the formula
[tex]\lambda=\frac{340}{386.36}=0.9 m[/tex]
