) A car of mass 300kg starts from rest and travels upwards along a straight road of 450m inclined at an angle of to the horizontal and the speed of the car is at the top of the slope. Determine: its acceleration, the time taken to travel the length of the slope, gain in kinetic energy and gain in gravitational potential energy

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