A string fastened at both ends has successive resonances with wavelengths of \( 0.54 \mathrm{~m}...

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A string fastened at both ends has successive resonances with wavelengths of \( 0.54 \mathrm{~m} \) for the \( n \)th harmonic and \( 0.48 \mathrm{~m} \) for the \( (n+1) \) th harmonic.
(a) Which harmonics are these?
(b) What is the length of the string?
(c) What is the wavelength of the fundamental frequency?
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