Fused quartz possesses an exceptionally low coefficient of linear expansion, 5.50 × 10-7 (c°)–1. imagine you had a bar of fused quartz of length 3.49 m at 20.0°c. by how much, in millimeters, would the bar expand if you heated it to 213°c?

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2