The linear density of a string is \( 1.9 \times 10^{-4} \mathrm{~kg} / \mathrm{m} \). A transver...

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The linear density of a string is \( 1.9 \times 10^{-4} \mathrm{~kg} / \mathrm{m} \). A transverse wave on the string is described by the equation
\[
y=(0.021 \mathrm{~m}) \sin \left[\left(2.0 \mathrm{~m}^{-1}\right) x+\left(30 \mathrm{~s}^{-1}\right) t\right] .
\]
What are (a) the wave speed and (b) the tension in the string?
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