Một bình bằng thép có thể tích tăng 1% khi áp suất tăng thêm 70Mpa. Ở điều kiện trạng thái áp suất p=101,3Kpa bình chứa đầy 450kg nước ( ρ =1000kg/ m3 ). Biết suất đàn hồi K=2,06. 109 pa. Hỏi khố lượng nước cần thêm vào để tăng áp suất lên thêm 70Mpa.

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?