2. Which one of the following is the extensive property of a thermodynamic system? (a) Volume (b) Pressure (c) Temperature (d) Density

P4 please help me with the answer and full solution

(1) The list consisting only of intensive properties is a) Volume, temperature, pressure. (c) Specific heat, temperature, density. (b) Specific volume, mass, volume. (d) Mass, temperature, pressure. (2) Which one of the following statements is incorrect for the first law if kinetic and potential energy changes are negligible? a) Heat transfer equals internal energy change for a process. (b) Heat transfer and work have the same magnitude when the internal energy remains constant. (c) The total energy input must equal the total work output for an engine operating on a cycle. (d) The internal energy change plus the work must equal zero for an adiabatic process. (3) A gas contained within a piston-cylinder assembly undergoes Process 1-2-3 shown on the P-V diagram below. Process 1-2-3 is: (a) Constant-volume expansion followed by constant-pressure compression. lege of E Departme (b) Constant-pressure compression followed by constant-volume expansion. c) Constant-volume compression followed…

Thermodynamics Answer the following questions and put the answer in the table below 1- A container filled with a sample of an ideal gas at the pressure of 1.5 atm. The gas is compressed isothermally to one-fourth of its original volume. What is the new pressure of the gas? (A) 2 atm (B) 3 atm (C) 4 atm (D) 5 atm (E) 6 atm 2- A container with rigid walls filled with a sample of ideal gas. The absolute temperature of the gas is doubled. What happens to the pressure of the gas? (A) Doubles (B) Quadruples (C) Triples (D) Decreased to one-half (E) Decreased to one-fourth 3- If the absolute temperature of a radiating object is doubled, by what factor does the rate of energy emission change? (A) 2 (B) 4 (C) 8 (D) 16 (E)32

4

Water contained in a piston-cylinder assembly undergoes two processes in series (point 1 to point 2 and point 2 to point 3): point 1: T1 = 100°C and P1 = 5bar point 2: 71= 151.9°C and P2 = 5bar and v2 = 0.300 .300 m³ point 3: 73= 200°C and v3 = .300" kg Use the thermodynamic tables A.2, A.3, and A.4 to answer the following questions: For questions 1, 3, and 5 choose from: subcooled water, saturated water, saturated liquid, saturated vapor, superheated vapor 1) What is the thermodynamic state of water at point 1: 2- What is the specific volume of water at point 1: 3) What is the thermodynamic state of water at point 2: 4) What is the quality of water (x) at point 2: 3) What is the thermodynamic state of water at point 3: 4) What is the pressure of water at point 3: (bar) On paper draw points 1, 2, and 3 on the following P-v and T-v diagrams and show the two processes. Add number values, units, and constant pressure or temperature lines if needed. Specify which table you used to find…

1.2 2 2.50 WP A gas undergoes a process in a piston-cylinder assembly during which the pressure-specific volume relation is pul2 = con- stant. The mass of the gas is 0.4 lb and the following data are known: P₁ = 160 lbf/in.², V₁ = 1 ft³, and p₂ = 390 lbf/in. During the process, heat transfer from the gas is 2.1 Blu. Kinetic and potential energy ef- fects are negligible. Determine the change in specific internal energy of the gas, in Btu/lb.

As shown on the right, a vertical piston–cylinder assembly containing a gas is placed on a hot plate. The piston initially rests on the stops. With the onset of heating, the gas pressure increases. At what pressure, in bar, does the piston start rising? The piston moves smoothly in the cylinder and g = 9.81 m/s2.

3. For a certain gas R=0.277 KJ/kg.K and k=1.384, (a) what are the value of Cp and Cu? (b) What mass of this gas would occupy a volume of 0.425 m³ at 517.11 kPa abs and 26.7 oC? (c) If 31.65 kJ of heat are transferred to this gas at constant volume for letter (b), what are the resulting temperature and pressure?

As shown in the figure below, air is contained in a vertical piston-cylinder assembly such that the piston is in static equilibrium. The atmosphere exerts a pressure of 14.7 lbf/in.² on top of the 6-in.-diameter piston. The absolute pressure of the air inside the cylinder is 20 lbf/in.². The local acceleration of gravity is g = 32.2 ft/s². Determine the mass of the piston, in lb. Mpiston = Determine (a) the mass of the piston, in lb, and (b) the gage pressure of the air in the cylinder, in psig. lb p(gage) = i Pa 14.7 lbf/in.² g=32.2 fus² Determine the gage pressure of the air in the cylinder, in psig. psig Di Air Pair