To grasp how weak this field is, if you wanted to produce it between two parallel metal plates by connecting an ordinary 1.5 VV AA battery across these plates, how far apart would the plates have to be

Apiston-cylinder device contains 0.1 kg of hydrogen gas (pg model: cv=10.18, k = 1.4, r= 4.12 kj/kg-k) at 1000 kpa and 300 k. the gas undergoes an expansion process and the final conditions are 500 kpa, 270 k. if 10 kj of heat is transferred into the gas from the surroundings at 300 k, determine (a) the boundary work (wb), and (b) the entropy generated (sgen) during the process