ume 2 when released. (2 ) it it's mass is us what is its period? FIGURE 21-69 Problem 61 21-11 Electric Dipoles 62. (II) A dipole consists of charges +e and me separated by 0.68 nm. It is in an electric field E = 2.2 X 10* N/C. (a) What is the value of the dipole moment? (b) What is the torque on the dipole when it is perpendicular to the field? (c) What is the torque on the dipole when it is at an angle of 45 to the field? (d) What is the work required to rotate the dipole from being oriented parallel to the field to being antiparallel to the field? 63. (II) The HCI molecule has a dipole moment of about 3.4 X 10 3 C . m. The two atoms are separated by about 1.0 x 10 m. (a) What is the net charge on each atom? (b) Is this equal to an integral multiple of e? If not, explain. (c) What maximum torque would this dipole experience in a 2.5 x 10*N/C electric field? (d) How much energy would be needed to rotate one molecule 45" from its equilibrium