show steps please

Problem 4) Electric potential and electric field [40 points] In a uniform electric field along the x - axis, equipotential planes that differ by 1.0 V are 10 cm apart. a) Find the electric field strength E in units of m b) How much potential energy U does a proton (charge te=1.6x10- C) gain when it moves 20 cm in positive x - direction through this electric field? Give the result for U in units of joules (J)