All Flashcards
Differentiate between an open and closed system.
Open System: Exchanges both matter and energy with surroundings. Closed System: Exchanges energy but not matter with surroundings.
What is the difference between Internal and External forces?
Internal Force: Force caused by a member within the system. External Force: Force caused by something outside the system.
Compare positive and negative work.
Positive Work: Work done on the system, increasing its energy. Negative Work: Work done by the system, decreasing its energy.
Compare Closed and Isolated Systems.
Closed System: Exchanges energy, not matter. Isolated System: Exchanges neither matter nor energy.
Compare Kinetic and Potential Energy.
Kinetic Energy: Energy of motion. Potential Energy: Energy of position or configuration.
What is the effect of doing positive work on a system?
The total energy of the system increases.
What is the effect of doing negative work on a system?
The total energy of the system decreases.
What happens when external interactions occur with a system?
The total energy of the system can change.
What happens when a force moves an object parallel to the force?
Work is done, and energy is transferred.
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed, only transformed.
Define a 'closed system' in thermodynamics.
A system that exchanges energy, but not matter, with its surroundings.
Define an 'open system' in thermodynamics.
A system that exchanges both matter and energy with its surroundings.
Define 'work' in physics.
The transfer of energy that occurs when an external force moves an object parallel to the force.
Define 'power' in physics.
The rate at which work is done or energy is transferred.
What is internal force?
Force caused by a member within the system.
What is external force?
Force caused by something outside the system.