A spring-loaded piston-cylinder device contains of m=1 kg carbon dioxide. Initially, the spring has no force on the piston and , , . Heat is transferred to the gas, causing the piston to rise and to compress the spring. At the state 2, , . The gas is an ideal gas. (9) If cv=0.657kJ/kg·K, calculate the internal energy ch

Thermodynamic. Determine the work needed to compress from V1=30 lt to V2=5 lt a gas applying a constant pressure of 2.5atm.

HELP ME WITH THIS THERMODYNAMIC PROBLEM Subcooled water at the pressure of 10 MPa and temperature of 100°C is heated at a constant pressure process to the temperature 200°C. If the mass of water is 5 kg (a closed system), determine the work and heat transfer in the process: Using compressed liquid water property table. Using saturated water property table (approximation). Using incompressible substance equations (note that in an incompressible fluid, the volume does not change).

Shown in the figure, an insulated rigid tank is divided into two equal parts by a partition. Initially, one part contains an indeal gas, and the other part is evacuated. The partition is then removed, and the gas expands into the entire tank. At the initial state, the mass of the gas is m= 4.00kg, initial pressure is p1 = 600.00 kPa, initial temperature is T1 = 300.00 K. The gas constant is R = 0.2870 kJ/(kg·K). (The internal energy can be determined by the equation ΔU=m·cv·(T2-T1), where cv =  0.7180 kJ/(kg·K) is the specific heat at the constant volume.)  Calculate the final state temperature T2.__________ (K)