You ride your skateboard to school and tell all your friends your rode at speed of 25 miles per hour. they know this cannot be true because they know
when you left the house and when you arrived at school.
how far school is from your house and what time school starts.
the distance between your house and school and how long it took you to get there.
the distance between school and your house and the direction you traveled.

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