An electron beam is bent in a circle ofradius 2.0 cm by a uniform field with B = 4.5><10'3 T. Calculate the speed ofthe electrons. A. 2.9 >< 107 m S*‘ I B. 2.2 >< 107 m s“‘ C. 1.8 >< 107 m $*1 1.6><107ms"I D. E. 1.4><107ms"‘

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