in the figure, block a has a mass of 3.00 kg. it rests on a smooth horizontal table and is connected by a very light horizontal string over an ideal pulley to block b, which has a mass of 2.00 kg. when block b is gently released from rest, how long does it take block b to travel 80.0 cm?

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