Question

A sound wave has frequency of 440 Hz and is traveling at 343 m/s through air. Your classmate claims the wavelength is 1.5*10^5 m. In 1-2 sentences, assess whether this claim is true and explain why or why not. if it is not true, give the correct wavelength.

Answer 1

The claim is false: wavelength λ = v/f, so λ = 343 m/s ÷ 440 Hz ≈ 0.78 m (about 78 cm), not 1.5×10^5 m — that value is off by roughly 2×10^5, likely an arithmetic or unit error.