A closed, rigid tank fitted with a paddle wheel contains 2 kg of air, initially at 300 K. During an interval of5 minutes, the paddle wheel transfers energy to the air at a rate pf 1 kW. During this interval, the air also receives energy by heat transfer at a rate of 0.5 kW. These are the only energy transfers. Assuming he ideal gas model for the air, and no overall changes in kinetic or potential energy, determine the final temperature of the air, in K.