A string, fixed at both ends, resonates at a fundamental frequency of 110 Hz. What single adjustment, or combination of adjustments, would have the effect of reducing the fundamental frequency to 220 Hz? Note: the length of the string is always the same. O Doubling the tension and doubling the mass density of the string. O Halving both the tension and the mass density. Halving the tension and doubling the mass density. O Holding the tension fixed and halving the mass density. O Doubling the tension and halving the mass density of the string. Halving the tension and keeping the mass density fixed. (none of the above) O O OO

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