cơ năng

cơ năng

Trong một hệ kín lý tưởng, cơ năng được bảo toàn.

Definition

  1. Noun (Physics):

    • Mechanical Energy: The sum of kinetic energy (energy of motion) and potential energy (stored energy of position) within a physical system. It is the energy associated with the motion and position of an object.

  2. Noun (Biology, Anatomy):

    • Function: The specific, normal activity of an organ, tissue, or system within a living organism. This refers to its physiological purpose or operation.
Usage Examples

  • Noun (Physics):

    • Trong một hệ kín lý tưởng, cơ năng được bảo toàn. (In an ideal closed system, mechanical energy is conserved.)
    • Cơ năng của con lắc chuyển đổi qua lại giữa thế năng và động năng. (The pendulum's mechanical energy converts back and forth between potential and kinetic energy.)

  • Noun (Biology):

    • Các bác sĩ đang kiểm tra cơ năng của gan. (The doctors are checking the liver's function.)
    • Suy giảm cơ năng thận là một vấn đề nghiêm trọng. (Impaired kidney function is a serious problem.)
Advanced Usage
  • The term is primarily used in formal, academic, or technical contexts (scientific papers, textbooks, medical reports). In everyday conversation, more specific or common terms are typically used instead.
  • In physics, it is a fundamental concept in classical mechanics for analyzing systems without dissipative forces like friction.
Variants and Related Words
  • Năng lượng cơ học: A less common, more descriptive synonym for "cơ năng" in the physics sense, directly translating to "mechanical energy."
  • Chức năng: A more general and common word for "function," used in both biological and non-biological contexts (e.g., chức năng của máy tính - the function of a computer).
Synonyms
  • Physics: Mechanical Energy.
  • Biology/Anatomy: Function, Physiological Role.
Notes on Different Meanings
  • The two primary meanings belong to completely different scientific fields. The intended meaning is always determined by context.
  • The physics meaning (mechanical energy) is quantitative and relates to energy conservation.
  • The biology meaning (function) is qualitative and relates to the purpose or activity of a biological structure.