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The band in the figure below is stainless steel (coefficient of linear expansion = 17.3 ✕ 10−6°C−1; Young's modulus = 18 ✕ 1010 N/m2). It is essentially circular with an initial mean radius of 4.8 mm, a height of 4.2 mm, and a thickness of 0.51 mm. If the band just fits snugly over the tooth when heated to a temperature of 79°C, what is the tension in the band when it cools to a temperature of 37°C?
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