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A manganese sheet of dimensions 20 cm×30 cm at 25 ∘C is heated to 75 ∘C, if the area of the sheet is increased by 0.72 cm2, what is the coefficient of superficial thermal expansion of manganese in 10−6 ∘C−1?24

Answer» A manganese sheet of dimensions 20 cm×30 cm at 25 C is heated to 75 C, if the area of the sheet is increased by 0.72 cm2, what is the coefficient of superficial thermal expansion of manganese in 106 C1?
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