A string fixed at both ends is $9\mathrm{.}7$ m long and has a mass of $0\mathrm{.}17$ kg $.$ It is subjected to a tension of $100$ N and set oscillating. $($a$)$ What is the speed of the waves on the string? $($b$)$ What is the longest possible wavelength for a standing wave? $($c$)$ Give the frequency of that wave.

$($a$)$ Number

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$($b$)$ Number

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$($c$)$ Number

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