Answer:
The length of the closed tube is
0.81 m
Explanation:
Formula used :
[tex]Speed = wavelength\times frequency[/tex]
[tex]v = \lambda \times \nu[/tex]
Speed = v = 346 m/s
[tex] \nu = 426.7 Hz[/tex]
[tex]346 = \lambda \times 426.7[/tex]
[tex]\lambda = \frac{326}{426.7}[/tex]
wavelength = 0.81 m
