An ideal gas (γ=1.67) follows the process abc shown in the figure. The temperature at a is 300 K. Let T₂ and T₃ denote the temperatures at b and c, respectively. Determine T₂, T₃, the work done, heat supplied along ab and bc, and the change in internal energy. Which option gives the correct result?

Question

G1 Physics · Accepted Answer

Using PV=nRT at the states shown gives T₂=600 K and T₃=900 K. The area under the path gives W=10 J. Applying Q=ΔU+W to segments ab and bc gives 14.9 J and 24.9 J, and the total internal-energy change is 29.8 J. Option A.