9. The pressure(P)-volume(V) diagram of a thermodynamic cycle is shown in the right figure (solid line). What area in the P-V diagram represents the work done by the system in each cycle? (A) α (B) β (C) γ (D) α + β (E) β + γ

9. The pressure(P)-volume(V) diagram of a thermodynamic cycle is shown in the right figure (solid line). What area in the P-V diagram represents the work done by the system in each cycle?

(A) α
(B) β
(C) γ
(D) α + β
(E) β + γ

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統計： 尚無統計資料

詳解 (共 1 筆)

助人為本

B1 · 2026/07/16

#7445729

所以如果看到封閉的PV循環圖

要想到每循環淨功會等於封閉區域面積

順時針系統作正功，逆時針系統作負功

16. Consider two observers A and B sit on two trains Tₐ and TB, respectively. These two trains have the same proper length. If Tₐ stays in a station and TB moves with a velocity v with respect to the station. When they overlap in the station, which one of the following statements is correct? (A) The observer A finds that Tₐ is shorter than TB, but the observer B finds that TB is shorter than Tₐ. (B) The observer A finds that TB is shorter than Tₐ, but the observer B finds that Tₐ is shorter than TB. (C) Both A and B find that Tₐ is shorter than TB. (D) Both A and B find that TB is shorter than Tₐ. (E) Both A and B find that TB and Tₐ have the same length.

9. The pressure(P)-volume(V) diagram of a thermodynamic cycle is shown in the right figure (solid line). What area in the P-V diagram represents the work done by the system in each cycle?

(A) α
(B) β
(C) γ
(D) α + β
(E) β + γ

詳解 (共 1 筆)

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