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- A temperature difference of 52 K is maintained between the sides of a 3.6-cm thick slab of plywood. What is the rate of heat transfer through a 44-cm2 area of the slab?Week 4 #17 A copper bar of thermal conductivity 401 W/(m·K) has one end at 114°C and the other end at 24.0°C. The length of the bar is 0.110 m, and the cross-sectional area is 1.00 × 10−6 m2. What is the rate of heat conduction ? along the bar? _______WThe frames for a pair of eyeglasses have a radius of 2.14 cm at 20.0°C. Lenses with radius of 2.15 cm have to be inserted into these frames. To what temperature must the technician heat the frames to accommodate the lenses? The frames are made of a material whose thermal expansion coefficient is 1.30 10-4/°C.
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- A glass louvre pane 0.4 cm thick has an area of 2×104cm2 . On a very cold day the temperature difference between the inside and outside surfaces of the pane is 25 °C. determine the rate of heat flow through this window. [ K glass = 0.837 Wm-1 °C ]Suppose a human body's core internal temperature is 37.0°C, the skin temperature is 34.0°C, the thickness of the tissues between averages 0.95 cm, and the surface area is 1.435 m2. -Calculate the rate of heat conduction, in watts, out of the human body.a wall consist of 3.0 cm of exterior wood and 2.0 cm of interior wood spearated by a 15cm layer of polystyrene foam. if the interior is kept at 19 Celsius degree, calculate the outside temperature for which the heat loss through the is 10 W/m2