Consider a conventional toaster the kind used to toast bread. Examine a real toaster, and then perform the following tasks: (a) Sketch two different boundaries associated with an operating toaster: one in which you define a closed system, and a second one in which you define an open system (control volume). Be sophisticated in your analyses. For example, you might want to consider whether air flows through the toaster. If so, how? What happens to the bread during the toasting process? Can the bread by itself be considered an open or a closed system? Discuss your selections justifying why each is either closed or open. (b) Repeat the problem choosing two different closed and open systems.