Lois Price came up with a brilliant idea of creating a 1,500m perfectly circular track. In order to do so she wanted to know her distance and displacement at four different locations. Starting at the TOP of the circle, what are her
distance and displacement if she travels... (HINT - Remember the circumference of a circle)
a. quarter way around the track
Isoo
b. half way around the track
4
Р A
C. 4 around the track
d. an entire lap
dist = 375

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