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A long slender bar is made from an unknown material. The length of the bar is 1.08 m, its cross-sectional area is 1.77 10-4 m?,

A long slender bar is made from an unknown material. The length of the bar is 1.08 m, its cross-sectional area is 1.77 10-4 m?, and its mass is 2.11 kg. A sound wave travels from one end of the bar to the other end in 2.57 104 s. Find the Young's modulus of the unknown material

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