A $2\mathrm{.}3-$m$-$long string is under $25$ NN of tension. A pulse travels the length of the string in $53$ msms $.$

Part A

What is the mass of the string?

Express your answer in grams.

What is the frequency of a sound source that produces the same wavelength in $20$ CC air?

Express your answer in hertz.

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ff $=$

nothing

HzHz

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