All Flashcards
What are the differences between an open and a closed system?
Open System: Exchanges both matter and energy. | Closed System: Exchanges energy, but not matter.
What are the differences between positive and negative work?
Positive Work: Work done on the system, increasing its energy. | Negative Work: Work done by the system, decreasing its energy.
Differentiate between internal and external forces.
Internal Force: Force exerted by an object within the defined system. | External Force: Force exerted on the system by an object outside of it.
What is the difference between work and power?
Work: The transfer of energy. | Power: The rate at which work is done.
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.
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.