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Physics 2
| Question | Answer |
|---|---|
| states that the change in a system's internal energy is equal to the amount of work done on the system plus the amount of energy transferred into the system through heating | -The first law of thermodynamics |
| The state of equal average kinetic energies and equal temperatures for objects is called | thermal equilibrium. |
| -The process by which an object transfers heat to another object through electromagnetic waves is called | radiation |
| The mechanism that transfers energy through direct physical contact is called | conduction |
| A material that resists changes in temperature is called | thermal insulator |
| A material that does not resist changes in temperature is called | a thermal conductor. |
| -The mechanism by which heat is transferred through fluid flow is | convection |
| is a process in which fluids rise or sink because their density decreases as their temperature increases | -Natural convection |
| is a process in which fluids at different temperatures are made to flow past each other so that the thermal energy of the warmer fluid is transferred to the cooler fluid. | Forced convection |
| -The amount of disorder in a system is called | entropy, |
| states that the net change in entropy of a system and its surroundings must always be greater than or equal to zero. | The second law of thermodynamics |
| is an engine that uses thermal energy to do mechanical work. | a heat engine, |
Created by:
omar1212