Answer:
19.33°C
Explanation:
To find the value of T you use the following formula:
[tex]v=343+0.61T[/tex]
v: speed of sound
To calculate v you use:
[tex]v=\lambda f[/tex]
λ: wavelength = 0.651m
f: = 545Hz
by replacing :
[tex]v=(0.651m)(545s^{-1})=354.79m/s[/tex]
Finally, by replacing in the first formula you obtain:
[tex]354.79=343+0.61T\\\\T=19.33\°C[/tex]
T = 19.33°C
