100年 - [無官方正解]100 國立嘉義大學_轉學生招生考試試題：普通物理#145340

1. At \( t=0 \), a 12.0-V battery is connected in series with a 220-mH inductor and a total of 30-\( \Omega \) resistance. Which is correct? (A) at \( t=0 \), the current is 0.40 A; (B) as \( t \to \infty \), the current decays to zero; (C) the time constant is about 7.3 ms; (D) it take 50 s for the current to reach half its maximum possible value.

2. Which of the following statement is NOT the second law of thermodynamics? (A) the entropy of a closed system can never decrease; (B) the entropy of the universe can never decrease; (C) it is impossible to construct a refrigerator operating in a cycle whose sole effect is to transfer heat from a cooler object to a hotter one; (D) the change in the internal energy of a system depends only on the net heat transferred to the system and the net work done by the system, independent of the particular processes involved.

3. When a current-carrying conductor is held fixed in a magnetic field, the field exerts a sideways force \( \vec{F}_s = -q_e \vec{v}_d \times \vec{B} \) on the charges moving in the conductor. This is the (A) Hall effect; (B) Meisner effect; (C) quantum-size effect; (D) edge effect.

4. The SI unit for Poynting vector r \( \vec{S}=\vec{E}\times\vec{B}/\mu_0 \) is is (A) A; (B) T; (C) W/m² ; (D) W.

1. 一個 100 kg 的飛行員駕駛飛機以 360 km/h 作半徑 2 km 的迴轉，求飛行員的
視重量為何？ (空氣對飛機所造成的上升力垂直於機翼)

2. 半徑 R 質量 m 的圓盤由高 h 斜角θ的斜面上釋放後只滾不滑，求
(a) 圓盤的轉動慣量? (b) 到達底部時的速率? (假設不計任何耗散力)

(a)系統吸收熱量? 對外做功? (單位 J )

(b) 考慮理想氣體等容膨脹過程中吸收熱量 \( Q_v = nC_v \Delta T \)，求出 \( C_p - C_v = R \)，\( R \) 是理想氣體常數。

4. 考慮理想氣體等容膨脹過程中吸收熱量 \( Q_v = nC_v \Delta T \)，求出 \( C_p - C_v = R \)，\( R \) 是理想氣體常數。
(a) 波長 (b) 波數 (c) 角頻率 (d) 電磁波的磁場大小