A natural water molecule (H2O) in its vapor state has anelectric dipole moment of magnitude, p = 6.2 x 10-30 C.m. (a) Findthe distance of the positive and negative charge centers of themolecule. Note that there are 10 electrons and 10 protons in anatural water molecule. (b) If the molecule is placed in a uniformelectric field, E = 2 x 104 N/C find the maximum torque acting onthe molecule. (c) How much work is needed to rotate this moleculeby 180° in this field starting from the initial position, for whichθ = 0? Hint: θ is the angle between the electric dipole moment andthe electric field.
