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Physics Help!!!

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One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode.

Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string?
F= ? Hz
i understood the other parts of the question except the part A please help thanks

  • Physics Help!!! -

    frequency goes up as the square root of tension.
    what is sqrt(3.2) * 245hz?

  • Physics Help!!! -

    its wrong :/

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