A gas mixture with volumetric proportions of 30%, carbon dioxide (specific heat of 0.867 kJ/kg-K) and 70% nitrogen (specific heat of 1.043 kJ/kg-K) is cooled at constant pressure from 150oC to 50oC. What is most nearly the energy released as heat per unit mass of mixture?

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)