Which materials, including polystyrenes, can be recycled?

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not

The charge on a charged sphere is; 1. concentrated at its center 2. distributed uniformly throughout its volume 3. clustered on its center 4. distributed uniformly over its surface