3) A 10 kHz sound wave with amplitude 2

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3) A 10 kHz sound wave with amplitude 2.0 mm is propagated through air at 24°C. Write the equations describing the travelling waves.

4) Given: steel wire with 22.0 g and length 1.25 m, fixed at both ends. Determine

(a) wave speed on the string and the required tension that will produce the desired fundamental frequency of 42.5 Hz.

(b) the wavelength of the string’s vibration

(c) the wavelength of the sound produced in air at a temperature of 22°C