According to theory, the period T of a simple pendulum is T = 2 p L=g (a) If L is measured as L = 1:40 0:01m; what is the predicted value of T? (b) Would you say that a measured value of T = 2:39 0:01s is consistent with the theoretical prediction of part (a)?

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