this is a physics 2 question a need step by step on how to solve. please clear writing

Problem 2 A dielectric slab with dielectric constant * = 2.5 is parallel to the c - 1/ plane and in an external electric field Eo = 100N/Ca. (a)What is the electric field in the dielectric? (b)Draw a diagram and label the bound charge. (c) Compute the bound charge density on each surface. (d)Compute the polarization field Er. Problem 3 The electric field of the charged wall board we use in lab has a magnitude of about 2.8 x103 -. The electrophorus is a conducting slab placed in this field. Imagine the electrophorus held slighly above the wall board. (a ) Compute the surface charge density on the bottom sur- face of the electrophorus. (b) Compute the surface charge density on the top surface Electrophorus of the electrophorus. (c) Grounding the electrophorus removes the surface charge density on the top surface. If the electrophorus is round it has a radius of about 12cm for our average pie pan. Charged Cutting Board How much total charge does a charged electrophorus carry? Problem 4 A square conducting slab with 10m sides carries a net charge of 10 C. (a)Use Gauss' law to find E inside the slab and close to its surfaces, far from the edges of the slab (b)The slab is placed to the right of an infinite charged nonconducting plane with charge density o = 2 x 10-6 C "mi so that the faces of the slab are parallel to the plane. Find the electric field on each side of the slab far from its edges and the charge density on each face