Mr smith is walking his dog. He walks for 5 minutes at a speed of 1.5 m/s. His dog runs at a speed of 5 m/s for the same time. How far does Mr Smith walk?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

What kind of simple machine is a catapult?

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