2. Piezoelectricity [2 points] The direct piezoelectric tensor for the piezoelectric material lead zirconate titanate (PZT) is shown below: C 0 0 741 0 [au] = ( 0 0 741 0 x 10-12 m/V -274 -274 593 0 O Find the resulting polarization vector (with direction, magnitude and units) when the following triaxial stress state is applied: 011 = 100 MPa 022 = 200 MPa 033 = 300 MPa