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  4. A steel wire with mass per unit length 7.0 × 10-3 kg m -1 is under tension of 70 N. The speed of transverse waves in the wire will be:

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Q. A steel wire with mass per unit length $7.0 \times 10^{-3} kg\, m ^{-1}$ is under tension of $70 \,N$. The speed of transverse waves in the wire will be:

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Solution:

$v=\sqrt{\frac{T}{\mu}}=\sqrt{\frac{70}{70 \times 10^{-3}}}=100 \,m / s$