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A long slender bar is made from an unknown material. The length of the bar is 0.752 m, its cross-sectional area is 1.48 × 10-4 m2, and its mass is 2.49 kg. A sound wave travels from one end of the bar to the other end in 2.30 × 10-4 s. Find the Young's modulus of the unknown material.

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