A parallel-plate capacitor has plate area A, plate separation x, and has a charge Q stored on its plates (Figure 1). Part A Figure +Q -Q A 2x +Q -2 > A 1 of 1 > Determine the work required to double the plate separation to 2x, assuming the charge remains constant a Express your answer in terms of the variables Q, x, A, and the appropriate constants. ? W = Submit Request Answer Part B Find the change in energy stored by the capacitor. Express your answer in terms of the variables Q, x, A, and the appropriate constants. AU = Submit Request Answer Provide Feedback 0 =|?