20. Heat and Temperature
Volume Thermal Expansion
5:07 minutes
Problem 17.16
Textbook Question
Textbook Question(II) A uniform rectangular plate of length ℓ and width ω has a coefficient of linear expansion α.
(a) Show that, if we neglect very small quantities, the change in area of the plate due to a temperature change ∆T is ∆A = 2αℓω ∆T . See Fig. 17–21.
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