James weighs 67 pounds on Earth. He has a mass of 30 kilograms. Which of the following is true? A.
James would weigh more on the Moon than he does on Earth.
B.
James would have a smaller mass on the Moon than he does on Earth.
C.
James would weigh less on the Moon than he does on Earth.
D.
James would have a greater mass on the Moon than he does on Earth.

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

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