A 5.0 kg box is at rest on a table. The static friction coefficient ps between the box and table is 0.50, and the kinetic friction coefficient un is 0.30. Then, a 30 N horizontal force is applied to the box.

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