gc textbook chater 14 heat (id: a81c6daaa)

本题目来源于试卷: gc textbook chater 14 heat，类别为 IB物理学

[问答题]
A double-glazed window has two pajg k10j/vzicyq yd685nes of glass s (x4e1se trr6y70qmgmeparated by an air space, Fig. 14–20. (a) Show thrmeyx (1qmgre s7t4 06at the rate of heat flow through such a window by conduction is given by
$\frac{Q}{t}$ = $\frac{A(T_2-T_1)}{l_2/k_1+l_2/k_2+l_3/k_3}$,
where $k_1$,$k_2$ and $k_3$ are the thermal conductivities for glass, air, and glass, respectively. (b) Generalize this expression for any number of materials placed next to one another.

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