3. Region 1 (z<0) contains a dielectric for which &1 = 2.5, while region 2 (z>0) is characterized by &2= 4. Let E, = -30ax + 50ay+70a, V/m, find: a) E2. b) D2 c) P2. d) The angle between E, and the normal to the surface. %3D %3D
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