Determine the force of attraction in a parallel-plate capacitor with a= 5 cm 2,d= 2 cm, and? r= 4 if the voltage across it is 50 v. (hint: read through section 4-10in the textbook.)

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor