Auniform, solid, 1700.0 kg sphere has a radius of 5.00 m. find the gravitational force this sphere exerts on a 2.20 kg point mass placed at the following distances from the center of the sphere: (a) 5.01 m , and (b) 2.70 m .

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Where do magnetic lines of force enter earth?

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