3 In a tempering process, glass plate, which is initially at a uniform temperature Ti , is cooled by suddenly reducing the temperature of both surfaces to Ts. The plate is 20 mm thick, and the glass has a thermal diffusivity of 6 107 m2 /s.

Respuesta :

Answer:

t=63s

tempersture gradient -2.36 x 10⁴

Explanation:

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