171. The linear mass density (mass per unit length) of a wire used in a musical instrument is $4\times10^{-3}\,\frac{\text{kg}}{\text{m}}$, and this wire is stretched between two points with a tension of $250\,\text{N}$. If the resonant frequency produced is $312.5\,\text{Hz}$, the wavelength of the wave created in it is how many meters? $$1/25 \quad (4) \qquad 0/80 \quad (3) \qquad 0/75 \quad (2) \qquad 0/50 \quad (1)$$ %% Page 14 Physics121-APage 13
\textbf{171.} The linear mass density (mass per unit length) of a wire used in a musical instrument is $4\times10^{-3}\,\frac{\text{kg}}{\text{m}}$, and this wire is stretched between two points with a tension of $250\,\text{N}$. If the resonant frequency produced is $312.5\,\text{Hz}$, the wavelength of the wave created in it is how many meters?
$$1/25 \quad (4) \qquad 0/80 \quad (3) \qquad 0/75 \quad (2) \qquad 0/50 \quad (1)$$
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