I. Choose the Correct Answer . real engine has an efficiency of33%. The engine has work output of2 4J4 per cycle.how much heat energy is extracted from the high-temperature reservoir per cycle? (D) (A)8J

一、质点系的动能定理

4-1动量冲量动量原理 4-2动量守恒定律 4-3碰撞 4-4质点对定点的角动量

§5-1 刚体的平动、转动和定轴转动 §5-2 力矩 转动定律 转动惯量 §5-3 转动动能 力矩的功 §5-4 角动量 角动量守恒定律

2-1牛顿运动定律力的概念惯性参照系 2-2力学单位制和量纲 2-3牛顿运动定律应用举例

1 Physics as Natural Philosophy Physics is one of the liberal arts, combining elements of reason, philosophy, mathematics, language, and rhetoric. The term natural philosophy reflects the creative and dynamic interplay that exists in physics among experiment, theory, logic, insight, inspiration, symmetry, beauty, and language

§3-1 功 功率 §3-2 动能 动能定理 §3-3 势能 §3-4 功能原理 机械能守恒定律 §3-5 能量守恒与转换定律

第一节 简谐振动

1.角动量定理的微分形式 (1)质点的角动量定理

第二章质点动力学 2.1牛顿运动定律及其应用 2.5非惯性系中的力学惯性力 2.6动量和角动量 2.7机械功和能