When 1.60 x 105 J of heat transfer occurs into a meat pie initially at 20.0°C, Its entropy increases by 475 J/K. What is its final temperature (in degrees)? 100 36 X °C

A cylinder with a piston contains 0.110 molmol of nitrogen at 1.80×105 PaPa and 310 KK . The nitrogen may be treated as an ideal gas. The gas is first compressed isobarically to half its original volume. It then expands adiabatically back to its original volume, and finally it is heated isochorically to its original pressure. A. Find the work done by the gas during the initial compression. B. Find the heat added to the gas during the initial compression. C. Find internal-energy change of the gas during the initial compression.

Two engines operate between the same two temperatures of 787 K and 385 K, and have the same rate of heat input. One of the engines is a reversible engine with a power output of 23.0 kW. The second engine has an efficiency of 42.0%. What is the power output of the second engine?

P₁ P3 Р V. T₁ 2 T₂ 3 T₁ V V. A heat engine consists of a heat source that causes a monatomic gas to expand, pushing against a piston, there by doing work. The gas begins at a pressure of p₁-300 kPa, a volume of V₁=150 cm³, and room temperature, T₁= 20 °C. On reaching a volume of V₂=450 cm³, the piston is locked in place, and the heat source is removed. At this point the gas cools back to room temperature. Finally, the piston is unlocked and used to isothermally compress the gas back to its initial state. The cycle is shown on the pV-diagram in the figure. Molar heat capacity at constant pressure for monatomic ideal gas is Cp = Cv+ R = 5R/2 where the universal gas constant is R = 8.314 J/mol K) Determine the work done on the gas in the process 2-3. Express your answer in J.