10. In an "adiabatic" process, which statement is correct about the heat Q, the work done W, and the internal energy ΔEint in an ideal gas system? (A) Q ＞ 0, W ＞ 0, ΔEint = 0 (B) Q ＜ 0, W ＞ 0, ΔEint = 0 (C) Q = 0, W = ΔEint (D) Q = 0, W = −ΔEint (E) None in above.

11. As shown in Fig. 6, an electrical hot plate inside a chamber generates heat in a rate of P = 100 W. One of the chamber walls is made of copper with thermal conductivity kCu = 401 W/m·K. The other walls are fiber wool which are nearly thermal insulated with kfiber = 0.048 W/m·K. The copper wall thickness is 3 mm, and the cross-section area is 0.1 cm². If the temperature outside the chamber is TL = 20 °C, in condition of thermal equilibrium, the temperature TH inside the chamber is (A) 24.8 °C (B) 34.8 °C (C) 58.8 °C (D) 84.8 °C (E) 94.8 °C

10. In an "adiabatic" process, which statement is correct about the heat Q, the work done W, and the internal energy ΔE_int in an ideal gas system?
(A) Q ＞ 0, W ＞ 0, ΔE_int= 0
(B) Q ＜ 0, W ＞ 0, ΔE_int= 0
(C) Q = 0, W = ΔE_int
(D) Q = 0, W = −ΔE_int
(E) None in above.

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