Ex12. An ordinary glass window has a coefficient of linear expansion 𝛼 = 9 × 10−6 (𝐶 )−1 . ...
An ordinary glass window has a coefficient of linear expansion 𝛼 = 9 × 10−6 (𝐶 )−1 . At 20 C the sides a and b have the values 1 m and
0.8 m respectively, see Fig. By how much does the area increase when its temperature rises to 40 ◦C?