Calculate the minimum amount of energy, in joules, required to completely melt 145 g of silver initially at 22.0°c. the melting point of silver is at 962°c. its specific heat capacity is 236 j/kg·k and its latent heat of fusion is 105 kj/kg.

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