Please help me with this question I would appreciate please

An electric dipole with dipole moment P = (3.28 i + 4.34 ) )(1.24 x 10-30 C.m) is in an electric field E = (4085 N/C)i. (a) What is the potential energy of the electric dipole? (b) What is the magnitude of torque acting on it? (c) If an external agent turns the dipole until its electric dipole moment is P = (-4.34 i + 3.28 j)(1.24 x 10-30 C.m), how much work is done by the agent? (a) Number i Units (b) Number i Units (c) Number i Units