All Flashcards
In the Work diagram, what do F, d, and θ represent in the equation ?
F: Force applied, d: Distance over which the force is applied, θ: Angle between force and distance vectors.
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 external interactions on a system?
External interactions can change the total energy of a system.
What happens when positive work is done on a system?
The total energy of the system increases.
What happens when negative work is done on a system?
The total energy of the system decreases.
What is the effect of friction on a system?
Friction converts mechanical energy into thermal energy, often decreasing the kinetic energy of the system.
What happens when energy is transferred to a system?
The system's total energy increases.