An infinite, nonconducting sheet has a surface charge density σ = +8.09 pC/m2. (a) How much work is done by the electric field due to the sheet if a particle of charge q0 = 8.01×10−19 C is moved from the sheet to a point P at distance d = 3.20 cm from the sheet? (b) If the electric potential V is defined to be zero on the sheet, what is V at P? (a) Number Units (b) Number Units