Design a unity-gain parallel bandreject filter with a center frequency of 400 rad/s and a bandwidth of 1500 rad/s. use 1 μf capacitors.

Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k