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A glass window 0.35 cm thick measures 85 cm by 35 cm . If the inside...

A glass window 0.35 cm thick measures 85 cm by 35 cm . If the inside and outside temperatures differ by 17 ∘, the heat flows through this window per minute is 73 kJ . Part A To compare the relative efficiency of air and glass as insulators, calculate the heat flows through this window per minute with a 0.35 cm thick layer of air instead of glass. Part B By what factor is the rate of heat transfer reduced?

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