A steel wire of length 40 cm and the diameter of 0.25 mm vibrates in unison with a tube, open at both ends and of effective 60 cm when each is surrounding its fundamental notes. The air temperature is 27°C. Find the tension in the wire. Given, the velocity of sound in air at 0°C = 332 m/s and density of steel = 7800 Kg/m^3
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