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Plywood is used as a thermal insulator in a house. It has a width of 4cm and area of 2m?. If the internal temperature is

Plywood is used as a thermal insulator in a house. It has a width of 4cm and area of 2m?. If the

internal temperature is 25C and the external temperature 50C and the thermal conductivity 0.04

J/s.m. C), find the time rate (Q/t) of heat transferred into the house.

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