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11 July, 23:51

The temperature of an aluminum disk is increased by 250 ∘C∘C. By what percentage does its volume increase?

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  1. 12 July, 02:20
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    rise in temperature, ΔT = 250 °C

    coefficient of cubical expansion of aluminium, γ = 69 x 10^-6 / °C

    So, the percentage increase in volume is

    ΔV / V = γ x ΔT = 69 x 10^-6 x 250

    ΔV / V = 0.01725

    ΔV/V x 100 % = 1.725 %
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