Technician a says that newer vehicles require less maintenance compared to older vehicles. technician b says that service intervals for an older vehicle can be extended if the oil is changed more frequently. who is correct?

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